2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Thermodynamics / रासायनिक उष्मागतिकी

JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Heat of reaction

  • question_answer
    When a strong acid, strong base or their salt are dissolved in water, they are completely ionised. If a strong acid is added to a strong base, \[{{H}^{+}}\] ions from the former combine with \[O{{H}^{-}}\] ions of the latter forming water. The formation of each water molecule liberates a certain quantity of energy and the reaction is exothermic. The heat liberated when one mole of water is formed by combining hydrochloric acid and sodium hydroxide is 13.7 kcal. The heat liberated when one mole of water is formed by combining sulphuric acid and sodium hydroxide is                 [AMU (Engg.) 1999]

    A)                 25.5 kcal              

    B)                 8.5 kcal

    C)                 13.7 kcal              

    D)                 34 kcal

    Correct Answer: C

    Solution :

              \[{{H}^{+}}+O{{H}^{-}}\to {{H}_{2}}O,\,\,\Delta {{H}_{\text{neutralization}}}=13.7\,kcal\].


You need to login to perform this action.
You will be redirected in 3 sec spinner