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Chemistry

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Isac Roob

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Cards in this guide (17)
How is electroplating done

the metal on which electroplating is to be done is taken as cathode ( negative electrode) . the metal of which electroplating is to be done is taken as anode ( positive electrode) and the salt solution of the metal of which electroplating is to be done is taken as electrolyte .

example-

if we want to electroplate iron with copper then iron is taken as cathode and copper is taken as anode and electrolyte is copper sulphate.Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes. This is done through the use of copper in a copper sulfate bath.

What does the average atomic mass represent

The average atomic mass represents the weighted average of the masses of the isotopes of the element.

Why do scientists define systems

It minimizes sources of bias in the data.

What is the cathode of a galvanic cell made with magnesium and gold

the gold electrode

What is true of both galvanic and electrolytic cells

reduction happens at the cathode

Oxidation happens at the anode

What happens to the anode in an electrochemical cell

it loses mass

What happens at the cathode in an electrolytic cell

Reduction occurs at the cathode in an electrolytic cell.

Which of the following best describes a galvanic cell

A battery containing a spontaneous redox reaction

What is the average atomic mass of an element with isotopes a b and c

(mass of A) x (%of A) + (mass of B) x (% of B) + (mass of C) x (% of C)

Which metal gets coated during electroplating

The cathode gets coated during electroplating.

What pieces of information is given in a half reaction

The number of electrons transferred in the reaction . . APEX c;

Reduction occurs at which electrode

The electrode that removes ions from solution

What is a trend seen in the periodic table

electronegativity

What would be the percent yield of the reaction be if the theoretical yield is 11.22 g but the actual yield was 8.67 g

In this case the yield is 77,27 %.

Which of the following statements describes electromagnetism

Magnetism can create electricity, and electricity can create magnetism.

In the reaction mgcl2 plus 2koh mgoh2 mgoh2 plus 2kcl if 3 moles mgcl2 are added to 4 moles koh what determined how much mgoh2 is made

The amount of Koh

What of the following best describes electroplating

Depositing one metal on another

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