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Asked Jan 22, 2020
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3 Calculate the energy needed to convert 0.75 mol of liquid water at 15°C to steam at 130°C.
= 4.18 J/g°C, s
1.84 J/g°C, A H (H,O) = 40.79 kJ/mol
%3D
%3D
water
steam
vap
CHEMISTRY 1516L 1-8
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3 Calculate the energy needed to convert 0.75 mol of liquid water at 15°C to steam at 130°C. = 4.18 J/g°C, s 1.84 J/g°C, A H (H,O) = 40.79 kJ/mol %3D %3D water steam vap CHEMISTRY 1516L 1-8

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Expert Answer

Step 1

Given,

Moles of liquid water = 0.75 mol

Initial temperature of water = 15.0°C

Final temperature of steam = 130°C

Specific heat of water, swater = 4.184 J/g°C

Specific heat of steam, ssteam = 1.84 J/g°C

Heat of vaporisation, △vapH = 40.79 kJ/mol

Mass of water can be calculated as :

Chemistry homework question answer, step 1, image 1
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Step 2

The heat involved in this process can be written as :

Chemistry homework question answer, step 2, image 1
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Step 3

The value of q1 , q2 and q3 can be calc...

Chemistry homework question answer, step 3, image 1
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