A hydrogen chloride gas reacted with oxygen gas to yield ...
A hydrogen chloride gas reacted with oxygen gas to yield water and chlorine gas. The mole ratio of the hydrogen chloride gas to water is
1:3
2:1
3:1
4:1
Correct answer is B
4HCl + O2 -- 2Cl2 + 2H2O
4:2 = 4/2
2:1
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