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Question

When a solution of 500mL of 2M KOH is added to 500mL of 2M HCl, then the rise temperature T1 is noted. When the same experiment is repeated by mixing 250mL of each solution, the rise in temperature T2 is noted :

A
T1=T2
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B
T1=2T2
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C
T2=2T1
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D
T1=4T2
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Solution

The correct option is B T1=T2
Option A is correct.

Q1=2Q2

1000×T1=2×500×T2

Q* = Total volume × raise in T

Q1=1000×T1

Q2=500×T2

T1=T2

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