• Home   /  
  • Archive by category "1"

Electrolysis Of Copper Sulfate Coursework Meaning

The electrolysis of copper sulphate solution and copper electrodes

1264 Words6 Pages

The electrolysis of copper sulphate solution and copper electrodes

Introduction:

For my GCSE Chemistry assessment I will be investigating the electrolysis of copper sulphate solution with the copper (ii) plates.

Aim:

My intention for this observation is to find out how the current has an effect on the mass of copper deposited in the electrolysis of copper sulphate and copper (ii) plates.

Safety Precautions:

In this investigation I will make sure that everything is as safe as possible and that there are no chances of accidents occurring.

(1) I will wear safety glasses and a lab coat to avoid any danger.

(2) I will tie my hair back, which will prevent any accidents from occurring.

(3) I will keep the area around me clear to…show more content…

(6) Copper sulphate solution- this will be used as the electrolyte

(7) Copper plates- this will be used as the cathode and anode

(8) Distilled water- this will be used for the cathode to be washed after the reaction

(9) Ethanol- this will be used to keep the copper shiny on the plates.

(10) Oven- this will be used to dry the cathode to weigh it.

(11) Wires- this will be used to join the circuit up.

(12) Weighing scale- this will be used to weigh the cathode each time.

(13) Sand Paper- this will be used to scrap off any impure copper.

Scientific Knowledge:

When copper is extracted from the ore it is about 98% pure so electrolysis is used to make the copper more purer. Electrolysis is used in big industries to get metals purified. As they want the metals
100% pure.

What is electrolysis?

Electrolysis is the procedure, which is used for the electricity to decompose a compound. The substance must be in a form of liquid or molten to allow the movement of the particles. This means that the solution must be electrolyte.

In the electrolysis of cupper (ii) electrodes and copper sulphate solution, the copper ions at the anode give ions to the cathode. That means that how much the anode has lost the cathode should have gained.
The anode is positively charged ions, and the cathode are negatively charged ions. The ions in the anode are called the anions, and in the cathode they are

Show More

An Investigation Into The Effect Of An Electric Current On Copper Sulphate Solution

  • Length: 767 words (2.2 double-spaced pages)
  • Rating: Excellent
Open Document

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - More ↓
An Investigation Into The Effect Of An Electric Current On Copper Sulphate Solution

Aim

In this experiment my aim is to enforce and develop ideas about the
investigation into the effect of an electrical current through copper
sulphate solution.

Safety

- Electricity is dangerous
- Aware of coppers sharp edges
- Long hair tied back
- Use of acids in experiment

Diagram

1) Weigh the cathode

2) Set up apparatus below

3) After a minute, remove the copper and shake off the excess copper
sulphate solution. Wipe the copper with acetone and waft in the air to
remove as much of the solution as possible.

4) Weigh the cathode again and record results. Repeat this procedure
for the other currents.

The anode does not need to be changed

Prediction

I predict that as you increase the voltage the mass of the cathode
will increase. However much the cathode increases in mass the anode
will increase in mass proportionately. I also think that the change in
mass will be directly proportional to the charge giving a straight
line that passes through the origin.

Justification Of Prediction

I think the increase of voltage will result in the increased mass of
the cathode. This is because the higher the voltage, the more
electrons are 'pulled' off the anode therefore more can be deposited
onto the cathode resulting in a higher mass. Theoretically as you
double the voltage the mass should double giving us a graph, which
goes through the origin. Using the equation Cu² - 2e Cu (s) we know
that 1 mole of copper ions requires 2 moles of electrons to produce 1
mole of copper metal. We can also use the equation to predict how much
copper should be deposited. The formula is:

½ x I x T
---------

95600

Next I will show a results table of predicted results, based on the
formulas I have given. This will be useful when I have my actual
results as I can compare these to what the ideal results should be,
and then evaluate whether I have valid results.

GRAPH

GRAPH

Analysis

By using the equation, 'Cu² - 2e’ Cu (s)' and the formula Q = I x T
/ 95600 we can work out how much copper should have been deposited.

How to Cite this Page

MLA Citation:
"An Investigation Into The Effect Of An Electric Current On Copper Sulphate Solution." 123HelpMe.com. 13 Mar 2018
    <http://www.123HelpMe.com/view.asp?id=48103>.

LengthColor Rating 
Essay about Volume's Effect on a Copper Sulphate Solution - Volume's Effect on a Copper Sulphate Solution We are trying to find out if the current though a copper sulphate solutions volume is increased. To find this information out I shall perform an experiment using the following equipment; · 1 power pack · 1 beaker · 2 carbon rods for anode and cathode · 1 ammeter · 1 measuring cylinder · 2 crocodile clip wirers I shall also be using 60cm3 volume of copper sulphate in my preliminary results to decide upon the concentration of copper sulphate and the voltage I shall use....   [tags: Papers]922 words
(2.6 pages)
Strong Essays[preview]
Electrolysis of Copper in Copper Sulphate Solution Essay - Electrolysis of Copper in Copper Sulphate Solution Introduction Aim This is an investigation into how temperature affects the amount of copper lost from the Anode and gained on the Cathode during electrolysis. Electrolysis is… The chemical change by passing electric charge through certain conducting liquids (electrolytes). The current is conducted by migration of ions - negative ones from the Anode (positive electrode), and positive ones to the Cathode (negative electrode)....   [tags: Papers]1485 words
(4.2 pages)
Strong Essays[preview]
The electrolysis of copper sulphate solution and copper electrodes Essays - The electrolysis of copper sulphate solution and copper electrodes Introduction: For my GCSE Chemistry assessment I will be investigating the electrolysis of copper sulphate solution with the copper (ii) plates. Aim: My intention for this observation is to find out how the current has an effect on the mass of copper deposited in the electrolysis of copper sulphate and copper (ii) plates. Safety Precautions: In this investigation I will make sure that everything is as safe as possible and that there are no chances of accidents occurring....   [tags: GCSE Chemistry Coursework Investigation]1255 words
(3.6 pages)
Strong Essays[preview]
The Effects of the Distance Between Two Plates in Copper Solution on the Current - The Effects of the Distance Between Two Plates in Copper Solution on the Current Introduction I am investigating the relationship between the distance between two metal plates in a copper sulphate solution and the effect it has on the electrical current across the two plates. Scientific Knowledge Resistance is the amount a substance resists the flow of charge flowing through it. How Resistant a substance is depends on 4 things: 1. The length of the wire- the longer the wire the bigger the resistance; if you double the length you double the resistance....   [tags: Papers]1564 words
(4.5 pages)
Strong Essays[preview]
How Does the Concentration of Copper II Sulphate Solution Affect Its Transparency? - Design Research Question How Does the Concentration of Copper II Sulphate Solution Affect Its Transparency. Background information Copper is a transition metal and one unique property of transition metals is to create different types colored compounds . Copper(II) sulfate, also known as cupric sulfate or copper sulphate, is the chemical compound with the chemical formula CuSO4. Existing as a gray white powered in anhydrous form however more commonly encountered salt in the laboratory is pentahydrate or (CuSO4·5H2O ) is bright blue in powdered form ....   [tags: chemical reaction, metal]561 words
(1.6 pages)
Good Essays[preview]
Essay on Steps To Improve Current Visual Effect Industry - Visual Effect (VFX) industry are changing rapidly. Back in the 1980’s until now, many milestone had been made within the industries using groundbreaking technology. Imagery things that can never be done before can now easily archived by artist. This increases the demand of shot in effects per year, in addition to government tax incentives making the industries more globalize. Technological advances making the competition barrier even lower thus resulting excessive supply than demand. But even in this rapid growth of the VFX industry, the business practice used doesn’t evolved a bit to match with this evolving modern world....   [tags: vfx industry, visual effects, movies ]
:: 6 Works Cited
1795 words
(5.1 pages)
Powerful Essays[preview]
Investigating the Effect of Copper Sulphate on Amylase Activity Essay - Investigating the Effect of Copper Sulphate on Amylase Activity Aim The aim of my experiment is to observe the affect on amylase when adding copper sulphate to a starch solution. Introduction Enzymes are that act as catalysts, in other words they increase the rate of chemical reactions. Consider the following general reaction between two substances, A and B, which react together to form a product, substance C: A + B = C In biological systems, this reaction might occur very slowly, or not at all, in the absence of an enzyme....   [tags: Papers]3341 words
(9.5 pages)
Strong Essays[preview]
Essay on An Investigation into Electrolysis - Copper Sulphate - An Investigation into Electrolysis - Copper Sulphate Introduction Decomposition caused by electricity is called electrolysis. The electrical energy causes a chemical change. When a salt is dissolved in water, its ions become free to move so the solution can be "electrolyzed." The products of the electrolysis depend on the chemical solution, its strength and the type of electrode. The cathode is negatively charged and therefore attracts to it positive ions. E.g. hydrogen. The more reactive substance stays in the solution whereas the less reactive is released and appears as a gas (hydrogen) or a coating of metal....   [tags: Papers]1372 words
(3.9 pages)
Strong Essays[preview]
The Electrolysis of Copper Sulphate Essay - The Electrolysis of Copper Sulphate Aim Analyse and evaluate the quantity of Copper (Cu) metal deposited during the electrolysis of Copper Sulphate solution (CuSo4) using Copper electrodes, when certain variables were changed. Results Voltage across Concentration of solution electrode 0.5M 1.0M 2.0M 2 5.0 10.6 19.5 4 10.5 19.8 40.3 6 14.3 26.0 60.2 8 15.2 40.4 80.3 10 15.0 40.2 99.6 12 15.1 40.0 117.0 Analysing/Conclusion The input variables in this experiment are; concentration of the solution and the voltage across the electrodes....   [tags: Papers]588 words
(1.7 pages)
Strong Essays[preview]
Essay on Buddhism is the Solution to Our Current Environmental Problems - Buddhism is the Solution to Our Current Environmental Problems The destruction of the environment is a major problem in the world today. The exploitation of natural resources, over population, pollution and the spread of human’s impact has negatively affected the quality of the Earth. All life is suffering from the environmental degradation. Air and water quality in cities and surrounding areas is poor. Greenhouse gas emissions are causing a global climate change that is displacing many species out of their natural habitat....   [tags: Environment Environmental Pollution]
:: 15 Works Cited
5482 words
(15.7 pages)
Powerful Essays[preview]

Related Searches

Electric Current         Sulphate Solution         Copper Sulphate Solution         Long Hair         Voltage        





Once we have found out the charge (Q) we divide it by 2. This is
because you have 2 moles of electrons to 1 mole of copper. This is
proven by the equation ' moles = mass / R.A.M (relative atomic mass).'
The ratio of this being 2:1 as the moles of electrons equals out to be
half of the moles in the outcome of copper deposited, proved by the
formula, ' moles of electrons = Q / 95600.' We find these formulas
from the first formula I gave: 'Cu²- 2e’ Cu (s)'.

The graph shows a relationship between charge and the mass deposited.
As the charge increases, more electrons are removed from the anode.
This enables more copper ions to move across to the cathode and
therefore be deposited, increasing the mass. Also I had predicted the
mass to be directly proportional to the increase of charge, but this did
not happen. We can find our mistakes by looking through the procedure.
I think that when we were drying the cathode, we accidentally left some
of the copper sulphate present, which added to the mass when weighed.

Evaluation

Our experiment gave us 10 results, which were averaged down to 5
points to plot on the graph and evaluate from. The results we
collected were not as we had expected and in places fell quite a way
from the line. I have circled the points I feel to be anomalous, and I
will now explain how I perceive we found them. I think that my odd
results were due to human error. It is the last two results I believe
to be odd, which may explain something. I think it was the last two
results that were wrong as it was towards the end of the experiment
that we had less time, and therefore weren't as careful drying the
copper as we could have been. To make the results more reliable I
would have liked to weigh the anode each time, and compare it to the
weight of the cathode to make sure if the loss was equal to the gain.
I think that bigger cathodes would gain accuracy, and also making sure
that the cathode and anode stayed the same distance away from each
other throughout the experiment. If I could explore this experiment
more thoroughly I would investigate a greater range of currents and
voltages. Also different concentrations of copper sulphate solution.



One thought on “Electrolysis Of Copper Sulfate Coursework Meaning

Leave a comment

L'indirizzo email non verrà pubblicato. I campi obbligatori sono contrassegnati *