Given the following heats of formation (ΔH°f, 25°C) and heats of combustion (ΔH°c, 25°C) data, determine...

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Chemistry

Given the following heats of formation (ΔH°f, 25°C)and heats of combustion (ΔH°c, 25°C) data, determine theheat of reaction for the liquid-phase esterification of lactic acid(C3H6O3) with ethanol(C2H5OH) to form ethyl lactate(C5H10O3) and liquid water at 25°Cand 1 atm.

C3H6O3 +C2H5OH -->C5H10O3 + H2O(liquid)

The table below shows the standard heat of combustion and heatof reaction.

Compound

ΔH°c (25°C, 1 atm) kJ/mol

ΔH°f (25°C, 1 atm) kJ/mol

C3H6O3

-

-687.0

C2H5OH

-

-277.6

C5H10O3

-2685

-

H2O (liquid)

-

-285.8

CO2 (gas)

-

-393.5

O2 (gas)

-

0

Answer & Explanation Solved by verified expert
3.6 Ratings (592 Votes)
Ans H0r 327 KJmol Explanation Step 1 Calculation of H0f of C5H10O3 The combustion equation of C5H10O3 is C5H10O3 O2 5 CO2 5 H2O H0c H0r    See Answer
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