Multiple Choice
Which of the following is a gas-evolution reaction?
A) 2 C2H6(l) + 7 O2(g) → 4 CO2(g) + 6 H2O(g)
B) 2 H2(g) + O2(g) → 2 H2O(g)
C) KCl(aq) + NaNO3(aq) → KNO3(aq) + NaCl(s)
D) NH4Br(aq) + KOH(aq) → KBr(aq) + NH3(g) + H2O(l)
E) None of the above is a gas-evolution reaction.
Correct Answer:

Verified
Correct Answer:
Verified
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