200 g water is heated from 400C to 600C. Ignoring the slight expansion of water, the change in its internal energy is close to (Given specific heat of water=4184 J/kg/K) :

  • Option 1)

     8.4 kJ

  • Option 2)

     4.2 kJ

  • Option 3)

    16.7 kJ

  • Option 4)

     167.4 kJ

     

 

Answers (1)

As we learnt in

Solids -

It is the type of matter which has got fixed shape and volume .The force of attraction between any two molecules of a solid is very large .

- wherein

e.g.Nacl,Diamond,Graphite

 

 Change in internal energy =ms\Delta T=0.20\times 4184\times 20=16.736\ KJ

Correct option is 3.


Option 1)

 8.4 kJ

This is an incorrect option.

Option 2)

 4.2 kJ

This is an incorrect option.

Option 3)

16.7 kJ

This is the correct option.

Option 4)

 167.4 kJ

 

This is an incorrect option.

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