A 13 point 0 0 g sample of citric acid reacts with an excess of baking soda as shown in the equation. cap h sub 3 cap c sub 6 cap h sub 5 cap o sub 7 plus 3 NaHCO sub 3 rightarrow 3 CO sub 2 plus 3 cap h sub 2 cap o plus Na sub 3 cap c sub 6 cap h sub 5 cap o sub 7 What is the theoretical yield of carbon dioxide?

Citric acid has a molar mass of about 192.12 g/mol, so 13.00 g is 13.00 ÷ 192.12 = 0.06767 mol. The equation shows that 1 mol of citric acid produces 3 mol of carbon dioxide, giving 0.2030 mol CO₂. Multiplying by CO₂’s molar mass, 44.01 g/mol, gives a theoretical yield of about 8.93 g, choice B.

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