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nika2105 [10]
3 years ago
6

Metal rings can be coated with a layer of copper using electricity.

Chemistry
1 answer:
Eduardwww [97]3 years ago
5 0

<u>First of all, what is electrolysis?</u>

Electrolysis is the process of breaking down ionic substances using direct current.

<u>Important points about electrolysis </u>

→ Ionic substances contain particles called ions.

→ Electricity is the flow of electrons or ions. For electrolysis to work, the compound must contain ions. The ions must be free to move for electrolysis to occur and it can happen by melting or dissolving an ionic substance in water.

→ Positively charged ions move to the negative electrode. They receive electrons and are <em>reduced</em>. The positive ions move towards the negative electrode because they want to cancel each other out.

→ Negatively charged ions move to the positive electrode.  They lose electrons and are <em>oxidised</em>. The substance that is broken down is called the electrolyte <em>(an electrolyte is just a liquid or solution that can conduct electricity)</em> . The negative ions move towards the positive electrode because they want to cancel each other out.

<h3>Cathode = Negative electrode</h3><h3>Anode = Positive electrode</h3>

Metal ions form at the cathode and non-metal ions form at the anode

How I remember if an element is <em>oxidised</em> or <em>reduced</em> is by remembering OIL RIG

OIL = Oxidation is Loss (of electrons)

RIG = Reduction is Gain (of electrons)

<h2><em><u>The answer to your question</u></em></h2>

1) The first step would be to clean the metal ring and sand it down because when the metal atoms from the electrolyte are deposited onto the ring, they will form a weak bond and they may simply 'fall' off. Also this could affect conductivity and the whole experiment. The more things you do accurately now, the more accurate your result will be.

2) You want to put the solution you are given in to the tank your going to be using.

3) This is basically the main part, you want to set up the circuit, I have attached a diagram at the bottom to show you the circuit. The copper rod will be the anode and the metal ring will be a cathode (ignore the elements).

4) Now turn on the circuit and you will start to see the solution spilt with the the solution now being split some going to the anode and some going the cathode.

5) Then a thin layer should form on the electrode.

Hope this helps :)

<h2><em><u></u></em></h2>

<em><u></u></em>

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explain the relationship between the kelvin temperature of a substance and the kinetic energy of its particles
blondinia [14]

Answer:

kinetic energy is directly proportional to the absolute temperature this is because when absolute temperature is increased it tends to cause more collision of the particles which hence increases kinetic energy of the particles .

since kinetic energy is the energy due to motion

7 0
3 years ago
If a balloon is expanded from 0.055 l to 1.403 l against an external pressure of 1.02 atm, how many l⋅atm of work is done?
Ahat [919]
Work for a irreversible reaction, in thermodynamics, is calculated by multiplying the external pressure with the change in volume. Therefore,

Work = P ( V2 - V1 )
Work = 1.02 (1.403 - 0.055)
Work = 1.375 L-atm

Hope this answers the question. Have a nice day.
8 0
3 years ago
The question is in the photo
Alenkinab [10]

The concentration of LiOH in the reaction is 0.103 M

<h3>What is the concentration of lithium hydroxide?</h3>

This is a neutralization reaction and the equation of the reaction is written as; H2SO4(aq) + 2LiOH(aq) ---->Li2SO4(aq) + H2O(l)

The average volume of acid used is obtained from;

8.54 + 8.51 + 8.68/ 3 = 8.58 mL

CA = 0.150 M

VA = 8.58 mL

CB = ?

VB= 25.0 mL

NA = 1

NB = 2

CAVA/CBVB = NA/NB

CAVANB = CBVBNA

CB = CAVANB/VBNA

CB = 0.150 * 8.58 * 2/25.0 * 1

CB = 0.103 M

The concentration of LiOH in the reaction is 0.103 M

Learn more about neutralization reaction:brainly.com/question/20038776

#SPJ1

4 0
1 year ago
Which of the following qualities do China and India have in common?
vfiekz [6]
The answer would be: d. Populations are over one billion.

China and India are the only two countries in the world with a population of over one billion.
7 0
3 years ago
What is the Lewis definition of an acid and a base? Provide one example equation of an acid-base reaction (other than the auto-i
Verdich [7]

Answer:

AlCl3 + Cl^- --------> AlCl4^-

AlCl3 is the lewis acid ( electron pair acceptor)

Cl^- is the lewis base (electron pair donor)

Explanation:

According to Lewis theory of acid-base reactions, Lewis bases donate pairs of electrons and Lewis acids accept pairs of electrons. A Lewis acid is therefore any substance, such as the H+ ion, that can accept a pair of nonbonding electrons. This simply means that, a Lewis acid is an electron-pair acceptor while a Lewis base is an electron pair donor. A Lewis acid is a contains an empty orbital which is capable of accepting an electron pair from a Lewis base having an orbital filled with a non bonding electron pair.

An example of acid base reaction in the Lewis sense is

AlCl3 + Cl^- --------> AlCl4^-

AlCl3 is the lewis acid ( electron pair acceptor)

Cl^- is the lewis base (electron pair donor)

5 0
3 years ago
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