Answer:
81.66g
Explanation:
First, let us write the balanced equation for the reaction. This is illustrated below:
2K + Cl2 —> 2KCl
Molar Mass of K = 39g/mol
Mass of K from the balanced equation = 2 x 39 = 78g
Molar Mass of KCl = 39 + 35.5 = 74.5g/mol
Mass of KCl from the balanced equation = 2 x 74.5 = 149g
From the equation,
78g of K produced 149g of KCl.
Therefore, Xg of K will produce 156g of KCl i.e
Xg of K = (78 x 156)/149 = 81.66g
