WBJEE · Chemistry · Thermodynamics (C)
Equal volumes of molar hydrochloric acid and sulphuric acid are neutralised by dilute \(\mathrm{NaOH}\) solution and \(\mathrm{x} \mathrm{kcal}\) and \(\mathrm{y} \mathrm{kcal}\) of heat are liberated respectively. Which of the following is true?
- A \(x=y\)
- B \(x=\frac{y}{2}\)
- C \(x=2 y\)
- D none of the above
Answer & Solution
Correct Answer
(B) \(x=\frac{y}{2}\)
Step-by-step Solution
Detailed explanation
Enthalpy of \(1 \mathrm{~g}\) equivalent of strong acid and \(1 \mathrm{~g}\) equivalent strong base \(=13.7 \mathrm{kcal}\) Equal volume contains double eq. of \(\mathrm{H}_2 \mathrm{SO}_4\) than \(\mathrm{HCl}\)
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