Question
Asked Mar 20, 2020
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2. To warm 400.0 grams of water, 0.050 mol of ethanol (C2H50H) is burned. The water warms from
24.6°C to 65.6°C. What is the heat of the reaction and what is the AH value for the reaction per
mole of ethanol burned?
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2. To warm 400.0 grams of water, 0.050 mol of ethanol (C2H50H) is burned. The water warms from 24.6°C to 65.6°C. What is the heat of the reaction and what is the AH value for the reaction per mole of ethanol burned?

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Expert Answer

Step 1

The weight of water is 400 g.

The given temperature values are 24.6 ˚C and 65.6 ˚C.

The constant value for specific heat of water is 4.18 J/g ˚C.

Step 2

The heat transfer during a reaction is given by,

Chemistry homework question answer, step 2, image 1

Step 3

Here, q is the heat energy, m is the mass of a substance, c is the specific heat, and ∆T is the change in temperature.

 

The change in temperature is,

Chemistry homework question answer, step 3, image 1

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