| ⇦ | 
| ⇨ |
In which of the following reaction standard entropy change (ΔS⁰) is positive and standard Gibb’s energy change (ΔG⁰) decreases sharply with increasing temperature
Options
(a) C (graphite) + 1/2 O₂(g) → CO(g)
(b) CO(g) + 1/2 O₂(g) → CO₂(g)
(c) Mg(s) + 1/2 O₂(g) → MgO(s)
(d) 1/2 C(graphite) + 1/2 O₂(g) → 1/2 CO₂(g)
Correct Answer:
C (graphite) + 1/2 O₂(g) → CO(g)
Explanation:
C(graphite) + 1/2 O₂(g) → CO(g),
Δn(g) = 1 – 1/2 = 1/2,
As amount of gaseous substance is increasing in product, thus
ΔS is positive for this reaction. And we know that ΔG = ΔH -TΔS. As ΔS is positive, thus increase in temperature will make TΔS more negative and ΔG will decrease.
Related Questions: - When cold potassium permanganate (KMnO₄) is added to ethylene gives
- Which of the following shows linear structure
- Which of the following is used in the preparation of chlorine
- When a neutral atom is converted into a cation, there is
- Who modified Bohr’s theory by introducing elliptical orbits for electron path
Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When cold potassium permanganate (KMnO₄) is added to ethylene gives
- Which of the following shows linear structure
- Which of the following is used in the preparation of chlorine
- When a neutral atom is converted into a cation, there is
- Who modified Bohr’s theory by introducing elliptical orbits for electron path
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
Leave a Reply