ExamBro
ExamBro
JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry

यदि \(H _{2} O _{2}\) के \(100\) मोल \(1 \;bar\) तथा \(300\; K\) पर वियोजित हो तो \(1 \;bar\) दाब के विरुद्ध \(1\) मोल ऑक्सीजन के विस्तारित होने पर किया हुआ कार्य \((kJ\) में\()\) होगा। \(2{H_2}{O_2}(l) \rightleftharpoons {H_2}O(l) + {O_2}(g)\)  \((R = 8.3\, JK^{-1}\, mol^{-1})\)

  1. A \(124.50\)
  2. B \(249\)
  3. C \(498\)
  4. D \(62.25\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(124.50\)

Step-by-step Solution

Detailed explanation

\(2{H_2}{O_2}(l) \leftrightarrow 2{H_2}O(l) + {O_2}(g)\) \(W = - {P_{ext}}(\Delta V) = - ({n_{{O_2}}})RT\) \(\because \,100\) mole \({H_2}{O_2}\) on decomposition give \(50\) mol \({O_2}\) \(\therefore \,W = - (50)(8.3)(300) = - 124500\,J\) \( = - 124.5\,kJ\)
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app