Chemical Thermodynamics Question 367

Question: The amount of energy released when $ 20mL $ of $ 0.5MNaOH $ are mixed with $ 100mL $ of 0.1 M $ HCl $ is $ xkJ. $ The heat of neutralisation (in kJ $ mo{{l}^{-1}} $ ) is

Options:

A) $ -100x $

B) $ -50x $

C) $ +100x $

D) $ +50x $

Show Answer

Answer:

Correct Answer: A

Solution:

  • In question 0.01 gev of $ NaOH $ is being neutralised by 0.01 gev of $ HCl $ and value is x kJ, for 1 gev the value is $ -100x $ (exothermic process).


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