Question

One of kg ice at $0{}^{o}C$ is mixed with 1 kg of water at $10{}^{o}C$. The resulting temperature will be:

• A. $Between0{}^{o}Cand10{}^{o}C$
• B. $Greaterthan10{}^{o}C$
• C. $Lesserthan0{}^{o}C$
• D. $Equalto0{}^{o}C$

Answer 1

The correct option is D $Equalto0{}^{o}C$

Heat required to convert 1Kg of ice into water at $0^{o}C$ $=1000\times 80=80kcal$

Heat released by water at ${10}^{o}C$ to $0^{o}C$ water $=1000\times 1\times 10=10kcal$

Required heat much much greater than released heat; resultant temperature is $0^{o}C$.