Question

Can someone help me with this question?

Answer 1

a) `CaCO_3 -> CaO +CO_2`
b) 94.33%

Explanation:

a) Formula of carbon dioxide is `CO_2` as valency of C is +4 and of O it is -2
Formula of calcium carbonate is `CaCO_3` as valency of Ca is +2
(You need to know the valency, and a tip to form the equation is to get the valency of every compound/element in the equation as 0)

b) 1 mole CaO = 56g
13100g = `13100/56`moles
= 233.93 moles
1 mole `CaCO_3` = 100g
24800g = 248 moles
% yield = `(233.93/248)*100`
= 94.33%