Chemistry, percentage yield from baking powder?
Phosphate baking powder is a mixture of starch, sodium, hydrogen carbonate, and calcium dihydrogen mixed with water, phosphate baking powder releases carbon dioxide gas, causing a dough or batter to bubble and rise.
2NaHCO3 + Ca(H2PO4)2 -> 2Na + Ca + 2HPO4 + 2CO2 + 2H2O
If L of CO2 is needed for a cake and each kilogram of baking powder contains 168 g of NaHCO3, what mass of baking powder must be used to generate this amount of CO2? The density of CO2 at baking temperature is about g/L.
Can someone please guide me through this step-by-step please? I'd appreciate it.
More Questions From This User See All
Answers & Comments
Verified answer
Calculate mass of CO2 required:
Mass = volume * density
Mass = * = CO2
Molar mass CO2 = 44g/mol
CO2 = = mol CO2
From the balanced equation:
1 mol NaHCO3 will produce 1 mol CO2
To produce mol CO2 you require mol NaHCO3
Molar mass NaHCO3 = 84g/mol
Mass of mol NaHCO3 = *84 = NaHCO3 required
Mass of baking powder required : = *1000/168 = baking powder required.