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The heat of combustion of carbon to CO₂ is -393.5 kJ/mol. The heat released upon formation of 35.2 g of CO₂ from carbon and oxygen gas is
Options
(a) 315 kJ
(b) -630 kJ
(c) -3.15 kJ
(d) -315 kJ
Correct Answer:
315 kJ
Explanation:
Given: C + O₂ → CO₂, ΔH = – 393.5 kJ/mol. Amount of heat realeased on formation of 44 g CO₂ = 393.5 KJ. Amount of heat released on formation of 35.2 g CO₂ = 393.5 / 44 * 35.2 = 314.8 ≈ 315 kJ.
Related Questions: - Pick out the stronger reducing agent among the following oxyacids of phosphorus
- The hydrogen ion concentration in mol/dm, in a 0.2 M solution of a weak acid
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Pick out the stronger reducing agent among the following oxyacids of phosphorus
- The hydrogen ion concentration in mol/dm, in a 0.2 M solution of a weak acid
- What is the oxidation number of Co in [Co(NH₃)₄Cl(NO₂)]
- Which of othe following is paramagnetic?
- The normality of 10 volume hydrogen peroxide is
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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