Question

What mass of potassium chloride would be produced from 20g of potassium carbonate

Answer 1

Answer:

The equation for the reaction to produce potassium chloride from potassium carbonate is;-

K2CO3 + 2 HCl ----> 2 KCl + H2O + CO2

Since the molecular weight of K2CO3 is 138.20g and the molecular weight of KCl is 74.55g, the equation tells us that 138.2g of potassium carbonate will produce 2 * 74.55 = 149.1g of potassium chloride.

So, the problem reduces to this;

if 138.2g K2CO3 ---> 149.1g KCl

then Xg K2CO3 ---> 12g KCl

Therefore;

X = (138.2 * 12)/ 149.1

X = 11.12g

Explanation:

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