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Q.

A solution of 200mL of 1M KOH is added to 200 mL of 1M HCl and the mixture is well shaken. This rise in temperature T1 is noted. The experiment is repeated by using 100 mL of each solution and increase in temperature T2 again noted. Which of the following is correct?

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a

T2 = 2T1

b

T1 = T2

c

T2 = 3T1

d

2T2 = T1

answer is A.

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Detailed Solution

Heat lost = Heat gained 

∆H = ms∆T

0.2×13.70.1×13.7=(200+200)sT1(100+100)sT2

T1 = T2

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