A) \[\text{CaC}{{\text{O}}_{3}}\xrightarrow{\Delta }CaO+C{{O}_{2}}\]
B) \[2NaHC{{O}_{3}}\xrightarrow{\Delta }N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O+C{{O}_{2}}\]
C) \[\begin{align} & 2NaHC{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}N{{a}_{2}}S{{O}_{4}} \\ & +2{{H}_{2}}O+2C{{O}_{2}} \\ \end{align}\]
D) \[\begin{align} & \text{CaC}{{\text{O}}_{\text{3}}}\text{+}{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\xrightarrow{{}}\text{CaS}{{\text{O}}_{\text{4}}} \\ & \text{+}{{\text{H}}_{\text{2}}}\text{O+C}{{\text{O}}_{\text{2}}} \\ \end{align}\]
Correct Answer: C
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