Consider the following equation, which represents the combustion of hydrogen sul

Question

Consider the following equation, which represents the combustion of hydrogen sulfide.
2H2S(g)+3O2(g)2SO2(g)+2H2O(g)

Part B

What volume, in liters, of O2(g) is required to form 20 L of H2O(g)? Assume that both gases are measured under the same conditions.

Express your answer to two significant figures and include the appropriate units.

Consider the following equation, which represents the combustion (burning) of heptane (C7H16).

C7H16(g)+11O2(g)7CO2(g)+8H2O(g)

Part B

What volume of C7H16 (g) has to burn to react with 29.3 mL of O2(g)? Assume that both gases are measured under the same conditions.

Express the volume to three significant figures and include the appropriate units.

Explanation / Answer

Q1

2H2S(g)+3O2(g)2SO2(g)+2H2O(g)

ratio is:

V = 20 liters of H2O

find V of O2 required

if 3 L of O2 = 2 L of H2O

x L o fO2 = 20 L of H2O

x = 20*3/2 = 30 L of O2 required

Q2.

C7H16(g)+11O2(g)7CO2(g)+8H2O(g)

ratio is

1 mol of fuel = 11 mol of oxidant

x L of O2 = x L of O2

x = 29.3/11

x = 2.663 mL of heptane required

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