1) Sodium chloride undergoes an electrolysis reaction producing two new substances. One is a metal and the other is a gaseous el

Question

2 years ago

11

ement.
a) Create a word equation

b) Create a skeleton equation

c) Balance each equation

1 answer:

Lena [83] · Answer 1 · 2023-03-10T21:10:04+03:00

Metallic sodium and chlorine gas are produced by the electrolysis of molten sodium chloride.

<h3>What is a word equation?</h3>

A word equation represents a chemical reaction using the names of the substances involved.

a) Word equation:

Sodium chloride + electrolysis → Sodium hydroxide + Hydrogen gas, Chlorine gas

b) The following reactions take place during the electrolysis of brine solution :

NaCl = $Na^+ +Cl^-$

$H_2O$ = $H^+ +OH^-$

Now there are two cations and two anions which get discharged in the following way :

At cathode : $2H^+ +2e^-$ = $H_2$

At anode: $2Cl^- - 2e-$ = $Cl_2$

The remaining ions

$Na^+ +OH-$ = NaOH

That's why we get $H_2$ , $Cl_2$ and NaOH.

c) Balance each equation is:

2NaCl (l) → 2Na(s) + $Cl_2$ (g)

Learn more about the word equation here:

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