NEET Chemistry Enthalpy Match the Following Question
Match Column-I with Column-II.
| Column-I | Column-II |
|---|---|
| (a) Enthalpy of formation of water | (i) –178.3 kJ mol –1 |
| (b) Enthalpy of formation of methane | (ii) –285.8 kJ mol –1 |
| (c) Enthalpy change for the reaction of CaO and CO2 | (iii) –74.81 kJ mol –1 |
| (d) Enthalpy of formation of ethanol | (iv) –277.7 kJ mol –1 |
a-ii, b-iii, c-i, d-iv
a-i, b-ii, c-iv, d-iii
a-ii, b-iv, c-i, d-iii
a-ii, b-iv, c-iii, d-i
Correct Answer
Detailed Explanation
The standard molar enthalpy of formation of water is given as –285.8 kJ mol –1, methane as –74.81 kJ mol –1, and the reaction of CaO with CO2 has an enthalpy change of –178.3 kJ mol –1, while ethanol's formation is –277.7 kJ mol –1 as per the NCERT context.
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