Asked by Dylan

consider the following reaction:
2CH3OH(g) yields 2CH4(g) + O2(g) change in enthalpy= 252.8kJ

Calculate the amount of heat transferred when 26.0 g of {\rm CH_3OH} (g) is decomposed by this reaction at constant pressure.
Answered by DrBob222
I am assuming from the way the problem is stated that dH is +252.8 kJ for the reaction as written. Then
252.8 kJ x (26/2*molar mass CH3OH) = ?
Answered by Dylan
For a given sample of CH3OH, the enthalpy change during the reaction is 82.6 kJ. How many grams of methane gas are produced?
Answered by DrBob222
2*16 x (82.6 kJ/252.8 kJ) = ? making the same assumption as above.
Answered by Dylan
yes all of these parts are derived from the same problem

How many kilojoules of heat are released when 38.4 g of CH4 (g) reacts completely with O2 (g) to form CH3OH (g) at constant pressure?
Answered by DrBob222
I've done two for you. Surely you don't need help on another one. They're all done the same way.
Answered by billy
beads?
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