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How much heat energy is gained when 5 kg...

How much heat energy is gained when 5 kg of water at `20^(@)C` is brought to its boiling point (Specific heat of water `= 4.2` kj kg c)

A

1680 kJ

B

1700 kJ

C

1720 kJ

D

1740 kJ

Text Solution

Verified by Experts

The correct Answer is:
A
Heat energy gained
Q = `m_(1)c_(1)DeltaT + m_(2)c_(2)DeltaT + m_(3)c_(3)DeltaT`
`= (2.4 xx 0.216 + 1.6 x 0.0917 + 0.8 xx 0.0931)`(60)
`44.376 cal = 44.44 cal
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