Mole ratios Knowledge-Based Download PDF

Questions

1. 1.

   According to the balanced chemical equation $\text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(g)$, what is the mole ratio of $\text{O}_2$ consumed to $\text{CO}_2$ produced?

   • A) 3 : 5
   • B) 4 : 3
   • C) 5 : 3
   • D) 5 : 4
2. 2.

   According to the balanced chemical equation $2\text{Fe}_2\text{O}_3(s) + 3\text{C}(s) \rightarrow 4\text{Fe}(s) + 3\text{CO}_2(g)$, how many total moles of products are formed for every 1.0 mole of $\text{Fe}_2\text{O}_3$ consumed?

   • A) 2.0 moles
   • B) 3.5 moles
   • C) 4.0 moles
   • D) 7.0 moles
3. 3.

   According to the balanced chemical equation $\text{N}_2(g) + 3\text{H}_2(g) \rightarrow 2\text{NH}_3(g)$, how many moles of $\text{H}_2$ are consumed during the production of 2.4 moles of $\text{NH}_3$?

   • A) 3.6 moles
   • B) 1.6 moles
   • C) 7.2 moles
   • D) 1.2 moles
4. 4.

   According to the balanced chemical equation $2\text{KClO}_3(s) \rightarrow 2\text{KCl}(s) + 3\text{O}_2(g)$, how many moles of $\text{O}_2$ are produced by the complete decomposition of 1.8 moles of $\text{KClO}_3$?

   • A) 2.7 moles
   • B) 1.2 moles
   • C) 5.4 moles
   • D) 1.8 moles
5. 5.

   According to the balanced chemical equation $2\text{C}_2\text{H}_6 + 7\text{O}_2 \rightarrow 4\text{CO}_2 + 6\text{H}_2\text{O}$, how many moles of $\text{O}_2$ are required to react completely with 5.0 moles of $\text{C}_2\text{H}_6$?

   • A) 1.4 moles
   • B) 7.0 moles
   • C) 10.0 moles
   • D) 17.5 moles