## Calculating heat

$\Delta S = \frac{q_{rev}}{T}$

Tony Ong 3K
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

### Calculating heat

What would be the process to solve this question:
Suppose 2 mole ice cube at -10 C is placed in 20.0mole of water at 20 C. Enthalpy of fusion of ice is 6.01kj/mol and molar heat capacities of ice and water at constant pressure are 37.7 J/K/mol and 75.3 J/K/mol. Calculate temperature after thermal equilibrium is reached.

EllerySchlingmann1E
Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

### Re: Calculating heat

This question is asking you to find the final temperature of the mixture. We want to assume that all of the heat is contained within the system, so q(ice) = -q(water). Now you just want to use the heat of phase change (q=n*deltaH) and the nCdeltaT formulas to find the final temperature, which would be the temperature at thermal equilibrium. Hope that helps!