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Calculating final temperature

Posted: Mon Feb 12, 2018 5:22 pm
by Grace Han 2K
In order to make iced-tea, a 50.0g ice cube at 0.00C is added to 250 ml of tea at 20.0C. What is final temp of the iced tea once it has reached thermal equilibrium. Assume that no heat is transferred to or from the surroundings. The density of water and iced tea is 1.00g/mL over the range of 0-20 C.


n deltaH(fus) + C(water)m (Tf-Ti) = - C(water)m (Tf-Ti)

deltaH(fus) of water is 6.01kJ/mol

6.01kJ/mol + (50g)(4.184J/gC)(Tf-0C)= -250g((4.184J/gC)(Tf-20C)

Is this the correct set-up for this problem?

Re: Calculating final temperature

Posted: Mon Feb 12, 2018 5:33 pm
by Jakob von Morgenland 2C
Don't forget to multiply your deltaHfus of ice by the amount of moles of ice you have (50/18). Other than that, looks good!