Chemical Thermodynamics Question 261
Question: When $ 50,cm^{3} $ of a strong acid is added to $ 50,cm^{3} $ of an alkali, the temperature rises by $ 5^{o}C $ . If $ 250,cm^{3} $ of each liquid are mixed, the temperature rise would be [KCET 1999]
Options:
A) $ 5^{o}C $
B) $ 10^{o}C $
C) $ 25^{o}C $
D) $ 20^{o}C $
Show Answer
Answer:
Correct Answer: A
Solution:
No doubt heat evolved during neutralisation of $ 250,cm^{3} $ of each acid and base is five time the heat evolved during neutralisation of $ 50,cm^{3} $ of each acid and base but the quantity if solution taking heat is also five time thus same temperature rise is noticed.
