Phosphate baking powder is a mixture of starch, sodium hydrogen carbonate, and calcium dihydrogen phosphate. When mixed with water, phosphate baking powder releases carbon dioxide gas, causing a dough or batter to bubble and rise 2NaHCO3(aq) + Ca(H2PO4)2(aq) ??
Na2HPO4(aq) + CaHPO4(aq) + 2CO2(g) + 2H2O(l )
If 0.750 L of CO2 is needed for a cake and each kilogram of baking powder contains 168 g of NaHCO3,
How many grams of baking powder must be used to generate this amount of CO2? The density of CO2 at baking temperature is about 1.20 g/L.
Answers: 3
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