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Chemistry · THERMODYNAMICS

हिन्दी

During the complete combustion of butane, \( \text{C}_4\text{H}_{10}(g) + \frac{13}{2}\text{O}_2(g) \rightarrow 4\text{CO}_2(g) + 5\text{H}_2\text{O}(l) \), \( 2658.0\text{ kJ} \) of heat is released per mole. How much heat is released when \( 14.5\text{ g} \) of butane gas (molar mass = \( 58\text{ g mol}^{-1} \)) is burned completely at standard conditions?

  1. A
    \( 664.5\text{ kJ} \)
  2. B
    \( 1329.0\text{ kJ} \)
  3. C
    \( 531.6\text{ kJ} \)
  4. D
    \( 332.25\text{ kJ} \)
View Answer & Solution

Correct answer · Option A

\( 664.5\text{ kJ} \)

Explanation

Number of moles of butane = \( \frac{14.5}{58} = 0.25\text{ mol} \). Heat released = \( 0.25 \times 2658.0\text{ kJ} = 664.5\text{ kJ} \).
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