JEE Advanced 2019 Chemistry question

Choose the reaction(s) from the following options, for which the standard enthalpy of reaction is equal to the standard enthalpy of formation.

(A)
(B)
(C)Correct
(D)Correct

Answer: (C),(D)

Solution

The standard enthalpy of formation is the enthalpy change when one mole of a compound is formed from its elements in their standard (reference) states. (A) forms 2 mol of water, so : not equal. (B) uses C(g), but the standard

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-026832