Chemistry: Stoichometry

Question

A 1.00 gram sample of potassium bicarbonate is decomposed by heating. If the resulting potassium carbonate weighs 0.725 grams and the calculated yield is 0.776 grams, what is the percent yield?

Answer 1

2KHCO₃ → K₂CO₃ + CO₂ + H₂O  balanced equation

% yield = actual yield/theoretical yield (x100%) = 0.725g/0.776 g (x100%) = 93.4%