Question

A pyrotechnician mixes 280 g of black powder for a firework. Find the amount of oxygen,...

A pyrotechnician mixes 280 g of black powder for a firework. Find the amount of oxygen, carbon dioxide, and sulfur dioxide generated when this firework bursts, if the oxidizing agent in the powder is saltpeter. Also give which are the limiting reactants for each reaction.

Homework Answers

Answer #1

Gunpowder, also known as black powder, is the earliest known chemical explosive. It is a mixture of sulfur, charcoal, and potassium nitrate (saltpeter). The sulfur and charcoal act as fuels, and the saltpeter is an oxidizer.

Potassium nitrate is the most important ingredient in terms of both bulk and function because the combustion process releases oxygen from the potassium nitrate. It is the limiting factor.

S + 3C + 2KNO3 3CO2 +N2 +K2S

68 g of gun powder ......3x44 g of CO2 S atomic weight 32

280................................?

3x44x280/68 C atomic weight 12

Ans: 543 g of CO2 liberates.

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