which-of-the-following-reactions-will-produce-a-gas

Question

Which of the following reactions will produce a gas?

Accepted Answer

CaCO_{3}(s) + 2HCl(aq) → CaCl_{2}(aq) + $$H_{2}O(l) + CO$$_{2}(g)

Answer

BaCl_{2}(aq) + $$Na_{2}SO$$_{4}(aq) → BaSO_{4}(s) + 2NaCl(aq)

Answer

NaCl(aq) + AgNO_{3}(aq) → AgCl(s) + NaNO_{3}(aq)

Answer

HCl(aq) + NaOH(aq) → NaCl(aq) + $$H_{2}O(l)$$