Question

For each equation , write all possible mole ratios . A. 2HgO(s)>2Hg(l)+O2(g) B. 4NH3(g)+6NO(g)>5N2(g)+6H2O(l)

Answer 1

Mole ratios represent quantities of substances in the chemical equation by proportion. Each answer can be stated in vice versa.

Answers for A are the following:
2 moles of HgO form 2 moles of Hg
2 moles of HgO form 1 moles of O2
2 moles of Hg to 1 mole of O2

Answers for B are the following:
4 moles NH3 to 6 moles NO
5 moles N2 to 6 moles H2O
4 moles NH3 to 5 moles N2
4 moles NH3 to 6 moles H2O
6 moles NO to 5 moles N2
6 moles NO to 6 moles H2O

Answer 2

A) For balanced chemical equation: 2HgO(s) → 2Hg(l) + O₂(g).

1) Mole ratio 1: n(HgO) : n(Hg) = 2 : 2 (1 : 1).

2) Mole ratio 2: n(HgO) : n(O₂) = 2 : 1.

3) Mole ratio 3: n(Hg) : n(O₂) = 2 : 1.

B) Balanced chemical equation: 4NH₃(g) + 6NO(g) → 5N₂(g) + 6H₂O(l).

1) Mole ratio 1: n(NH₃) : n(NO) = 4 : 6 (2 : 3).

2) Mole ratio 2: n(NH₃) : n(N₂) = 4 : 5.

3) Mole ratio 3: n(NH₃) : n(H₂O) = 4 : 6 (2 : 3).

4) Mole ratio 4: n(NO) : n(N₂) = 6 : 5.

5) Mole ratio 5: n(NO) : n(H₂O) = 6 : 6 (1 :1).

6) Mole ratio 6: n(N₂) : n(H₂O) = 5 : 6.