Question
Choose the reaction(s) from the following options, for which the standard enthalpy of reaction is equal to the standard enthalpy of formation.
JEE Advanced
Chemistry
Thermodynamics (C)
2019
JEE Advanced 2019 (Paper 1)
JEE Advanced Chemistry Question (2019) — Solution
Options
- A. 3 2 O 2 g → O 3 g
- B. 1 8 S 8 s + O 2 g → S O 2 g
- C. 2 H 2 g + O 2 g → 2 H 2 O l
- D. 2 C g + 3 H 2 g → C 2 H 6 g
Answer
B. 1 8 S 8 s + O 2 g → S O 2 g
Step-by-step solution
Standard enthalpy formation of a compound is the amount of enthalpy charge involved when one mole of a compound is formed from the reactants present in their elementary form,
Related: Chemistry — Thermodynamics (C) · All PYQ Banks