| ⇦ | 
| ⇨ |
The values of heat of formation of SO₂ and SO₃ are -298.2 kJ and -98.2 kJ. The heat of formation of this reaction will be SO₂ + (1/2)O₂ → SO₃
Options
(a) 200 kJ
(b) -356.2 kJ
(c) -200 kJ
(d) -396.2 kJ
Correct Answer:
200 kJ
Explanation:
Values of heat formation of SO₂ = -298.2 kJ and that of SO₃ = -98.2 kJ.
Therefore S(s) + O₂(g) → SO₂(g) , ΔH = -298.2 kJ ..(i)
and S(s) + (3/2)O₂(g) → SO₃(g), ΔH = -98.2 kJ ..(ii)
Subtracting equation, (i) from (ii), we get,
SO₂ + 1/2O₂ → SO₃. ΔH = -98.2 – (-298.2) = 200 kJ.
Related Questions: - Number of chiral carbon in β-D-(+) glucose is
- The oxidation state of chlorine in HClO₄ is
- General electronic configuration of lanthanides is
- The basic character of the transition metal monoxides follows the order.
- When 25g of Na₂SO₄ is dissolved in 10³ kg of solution,its concentration will be
Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Number of chiral carbon in β-D-(+) glucose is
- The oxidation state of chlorine in HClO₄ is
- General electronic configuration of lanthanides is
- The basic character of the transition metal monoxides follows the order.
- When 25g of Na₂SO₄ is dissolved in 10³ kg of solution,its concentration will be
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