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Rashid [163]
3 years ago
7

Classify the chemical equation CaCO3 → CaO + CO2

Chemistry
1 answer:
pychu [463]3 years ago
3 0

This is displacement reaction.

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\boxed{\text{B and C }}

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In a single-displacement reaction, one element exchanges partners with another element in a compound.

\textbf{A. } \rm Fe + 2HCl \longrightarrow FeCl_2 + H_2

This is a single-displacement reaction, because the element Fe exchanges partners with H in HCl.

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\textbf{C. } \rm Na_2S + 2HCl \longrightarrow 2NaCl + H_2S

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\textbf{D. } \rm Ca + 2HOH \longrightarrow Ca(OH)_2 + H_2

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