Which of the following reaction is endothermic?

Chemistry

JAMB 2008

A. C_(s) + O_2(g) → CO_2(g)
B. CaO_(s) + H₂O_(l) → Ca(OH)_2(s)
C. C_(s) + H₂O_(g) → CO_(g) + H_2(g)
D. HCl_(aq) + NaOH_(aq) → NaCl_(aq) + H₂O_(l)

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Correct Answer: Option C

Explanation

Water Gas is a mixture of carbon monoxide and hydrogen produced from synthesis gas.\(H_2O + C --> H_2 + CO\) (H=+131KJ/mol)
An Endothermic process is any process which requires or absorbs thermal energy from its surroundings, usually in the form of heat.in Endothermic reaction ∆H is positive.
Therefore it is Endothermic

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