In the first part of the experiment, the latent heat of fusion for water is meas

Question

In the first part of the experiment, the latent heat of fusion for water is measured. In this experiment, water, ice, the inner aluminum can, and the aluminum stirrer gain or lose heat energy. There are three temperatures involved: 0oC, Ti (the starting temperature of the water in the calorimeter), and Tf (the final temperature of the water in the calorimeter). Equation 6 can be rewritten [miceLf] + [micecw(Tf - 0oC)] = [mwcw(Ti - Tf)] + [Ccst(Ti - Tf)] Each of the four terms in brackets represents an energy.

For each term identify the substance involved. You must answer all the parts of this question correctly to receive full credit.

A. [miceLf] B. [micecw(Tf - 0oC)] C. [mwcw(Ti - Tf)] D. [Ccst(Ti - Tf)]

Ice

Water from melted ice

Water in calorimeter

Calorimeter can and stirrer Flag this

Question Question 7 1 pts In the second part of the experiment, the latent heat of vaporization for water is measured.

In this experiment, water, steam, the inner aluminum can, and the aluminum stirrer gain or lose heat energy.

There are three temperatures involved: 100oC, Ti (the starting temperature of the water in the calorimeter), and Tf (the final temperature of the water in the calorimeter).

Equation 8 can be rewritten [msteamLv] + [msteamcw(100oC - Tf)] = [mwcw(Tf - Ti)] + [Ccst(Tf - Ti)]

Each of the four terms in brackets represents an energy. For each term explain which substance. You must answer all portions of this question correctly to receive full credit.

A. [msteamLv] B. [msteamcw(100oC - Tf)] C. [mwcw(Tf - Ti)] D. [Ccst(Tf - Ti)]

Steam

Water condensed from

steam Water in calorimeter

Calorimeter can and stirrer

Explanation / Answer

1)

[miceLf] this term is for melting of ice

[micecw(Tf - 0oC)] for waer from melted ice

[mwcw(Ti - Tf)] for temperature loss of waater

[Ccst(Ti - Tf)] for Calorimeter can and stirrer Flag

2) [msteamLv] for cndensation of steam or conversion of steam to water at 100 C.

[msteamcw(100oC - Tf)] water obtained from condensed steam

[mwcw(Tf - Ti)] water already present is gaining temperature

[Ccst(Tf - Ti)] for Calorimeter can and stirrer Flag

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