The difference between ΔH and ΔE at 300 K for the reaction

⇦

⇨

The difference between ΔH and ΔE at 300 K for the reaction
C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)

Options

(a) 300 ˣ 8.31 J/mol
(b) -300 ˣ 8.314 J/mol
(c) 3 ˣ 300 ˣ 8.314 J/mol
(d) -3 ˣ 300 ˣ 8.314 J/mol

Correct Answer:

-3 ˣ 300 ˣ 8.314 J/mol

Explanation:

ΔH = ΔE + Δn(g)RT
or ΔH – ΔE = Δn(g)RT,
where Δn(g) = (3) – (5 + 1) = -3.
Thus, ΔH – ΔE = -3 * 8.31 *300 J/mol.

Related Questions:

1. Chlorine is liberated, when we heat
2. The inert gas abundantly found in atmosphere is
3. Reaction of methyl bromide with aqueous sodium hydroxide involves
4. One gram sample NH₄NO₃ is decomposed in a bomb calorimeter.
5. Which one of the following electrolytes has the same value of van’t Hoff’s factor

Topics: Thermodynamics (179)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends