OnlineCBT
Chemistry · THERMODYNAMICS
हिन्दीMatch List-I with List-II: List-I (Substance) List-II (\( \Delta_f H^\ominus / \text{kJ mol}^{-1} \) at 298 K) A \( \text{CO}_2(g) \) I \( -393.51 \) B \( \text{CH}_4(g) \) II \( -74.81 \) C \( \text{C}(\text{diamond}) \) III \( +1.89 \) D \( \text{H}_2\text{O}(l) \) IV \( -285.83 \) Choose the correct answer from the options given below:
Match List-I with List-II:
| List-I (Substance) | List-II (\( \Delta_f H^\ominus / \text{kJ mol}^{-1} \) at 298 K) | ||
|---|---|---|---|
| A | \( \text{CO}_2(g) \) | I | \( -393.51 \) |
| B | \( \text{CH}_4(g) \) | II | \( -74.81 \) |
| C | \( \text{C}(\text{diamond}) \) | III | \( +1.89 \) |
| D | \( \text{H}_2\text{O}(l) \) | IV | \( -285.83 \) |
Choose the correct answer from the options given below:
Correct answer · Option 1
A-(I), B-(II), C-(III), D-(IV)
Explanation
From Table 5.2: \( \Delta_f H^\ominus \) values are \( \text{CO}_2(g) = -393.51 \), \( \text{CH}_4(g) = -74.81 \), \( \text{C}(\text{diamond}) = +1.89 \), and \( \text{H}_2\text{O}(l) = -285.83\text{ kJ mol}^{-1} \).
