- 1(current)
Q. No.Three thermochemical equations are given below:
Based on the above equations, find out which one of the relationships given below is correct :
| (i) | C(graphite) + O2(g) \(\rightarrow\) CO2(g); \(\Delta_{r}\)H° = x kJ mol–1 |
| (ii) | Cgraphite + 1/2 O2(g) \(\rightarrow\) CO(g); \(\Delta_{r}\)H° = y kJ mol–1 |
| (iii) | CO(g) + 1/2 O2(g) \(\rightarrow\) CO2(g); \(\Delta_{r}\)H° = z kJ mol–1 |
| 1. | z = x + y | 2. | x = y + z |
| 3. | y = 2z – x | 4. | x = y – z |
Subtopic: Hess's Law |
79%
Level 2: 60%+
NEET - 2013
Hints
For the following neutralization reaction:
MgO(s) + 2HCl(aq) → MgCl₂(aq) + H₂O(l)
How does the enthalpy change of the reaction compare with the standard enthalpy of neutralization
of a strong acid and a strong base (−57.33 kJ mol⁻¹)?
1. Equal to 57.33 kJ mol⁻¹
2. Equal to −57.33 kJ mol⁻¹
3. Greater than 57.33 kJ mol⁻¹
4. Less than 57.33 kJ mol⁻¹
Subtopic: Hess's Law |
Level 3: 35%-60%
AIPMT - 2005
Hints
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.