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The combustion enthalpies of carbon , hydrogen and methane are -395.5 kJ mol⁻¹,-284.8 kJ mol⁻¹ and -890.4 kJ mol⁻¹ respectively at 25⁰ C. The value of standard formation enthalpies of methane at that temperature is
Options
(a) 890.4 kJ mol⁻¹
(b) -298.8 kJ mol⁻¹
(c) -74.7 kJ mol⁻¹
(d) -107.7 kJ mol⁻¹
Correct Answer:
-74.7 kJ mol⁻¹
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Subject: Chemistry
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Dead burnt plaster is
- which of the following oxy acids of phosphorus is a reducing agent and monobasic
- 0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc
- Solubility of MX₂ – type electrolytes is 0.5 ˣ 10⁻⁴ mol/L.,
- When conc. H₂SO₄ is added to dry KNO₃,brown fumes are evolved.These fumes are
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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