Question

Propane (C3H8) is a component of natural gas and is used in domestic cooking and heating.

C3H8 + O2 = CO2 + H2O

How many grams of carbon dioxide can be produced by burning 2.7 mol of propane?

Answer 1

Solution:

A chemical equation must be balanced:

C₃H₈ + 5O₂ = 3CO₂ + 4H₂O

According to the reaction equation from 1 mol of C₃H₈ be produced 3 moles of CO₂.

molar mass of CO₂ 44.01 gram/mol

mass CO₂ $= (2.7 mol C_3 H_8)/(1 mol C_3 H_8 )×(3 mol CO_2)×(44.01 g/mol CO_2)$= 356.48 g CO₂

Answer: can be produced 356.48 grams of carbon dioxide.