Calculate the amount of heat transferred
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Consider the following reaction:
CH3OH -->CO + 2H2 Delta H= 90.7 kJ
Calculate the amount of heat transferred when 49.0g of CH3OH is decomposed by this reaction at constant pressure.
For a given sample of CH3OH, the enthalpy change on reaction is 16.5kJ . How many grams of hydrogen gas are produced?
What is the value of Delta H for the reverse of the previous reaction? How many kilojoules of heat are released when 27.0g of CO reacts completely with H2 to form CH3OH at constant pressure?
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CH3OH ---> CO + 2 H2 ΔH= 90.7 kJ
Calculate the amount of heat transferred when 49.0 g of CH3OH is decomposed.
To answer this question, we need to know the molar mass of CH3OH, which is 32 g/mol.
(1 mol/32 g)(49.0 g)(90.7 kJ/mol) = 139 kJ
This makes sense since 49.0 g is more than 1 mole. One mole is 32 g, right? Therefore, we should expect our answer to be greater than 90.7 kJ, the amount of ...
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