Question

A solid of mass 200 g at 100°C is dropped into a
copper calorimeter of mass 100 g containing
150 g of water at 40°C. The final temperature is
50°C. Calculate the specific heat capacity of
the solid. Specific heat capacity of copper is
0.4Jg-1°C and that of water is 4.2 Jg-1°C​

Answer 1

Answer:

heat absorbed by the ''calorimeter + water'' system is equal to the heat released by the solid.

Specific heat of water   S  

w

=1 cal/g  

o

C

So,    m  

w

S  

w

(40−15)+m  

c

S  

c  

(40−15)=m  

s  

S  

s  

(90−40)  

Or     100×1×25+100×0.1×25=250×S  

s  

×50

⟹ S  

s  

=0.22 cal/g  

o

C

Explanation:

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