Chemical Thermodynamics Question 221
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 mol of $ NaOH $ is being neutralised by 0.01 mol of $ HCl $ and value is x kJ, for 1 mol the value is $ -100x $ (exothermic process).
BETA
