a)DH is +; heat is absorbed.
b)90.7 kJ x (45.0/molar mass CH3OH) = ?
c)(25.8/90.7) x 4 = ?
CH3OH(g) ----> CO(g) + 2H2 (g) (delta H =+90.7k)
A) is heat absorbed or released in the course of this reaction?
b) calculate the amount of heat transferred when 45.0g of CH3OH(g)is decomposed by this reaction at constant pressure.
c) for a given sample of CH3OH, the enthalpy change on reaction is25.8kj. how many grams of hydrogen gas are produced? what is thevalue of delta H for the reverse of the previous reaction?
d) how many kilojoules of heat are released when 50.9 g of CO(g)reacts completely with H2O(g) to form CH3OH(g) at constantpressure?
2 answers
1)heat is absorbed because delta h is positive
2) first change the grams to moles, then changes the the moles to kj
3)do number two but in reverse
4)
2) first change the grams to moles, then changes the the moles to kj
3)do number two but in reverse
4)
3 answers