As defined in the text, identify the "gas evolution" reactions among the following:
1. 2HCl(aq) + K2CO3(aq) ? H2O(l) + CO2(g) + 2KCl(aq)
2. CH4(g) + 2O2(g) ? CO2(g) + 2H2O(l)
3. 2HCl(aq) + K2S(aq) ? H2S(g) + 2KCl(aq)
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) All of 1, 2, and 3
E) None of 1, 2, and 3
Answer: B
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Chemistry Chapter 7
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