Heat Transfer Reaction: CH3OH to CO + H2

AI Thread Summary
The discussion revolves around a heat transfer reaction involving the decomposition of methanol (CH3OH) into carbon monoxide (CO) and hydrogen gas (H2), with an enthalpy change of +90.7 kJ. Participants are asked to calculate heat transfer for specific amounts of CH3OH and the resulting hydrogen production based on a given enthalpy change. However, forum members emphasize the importance of showing calculations and efforts before receiving assistance, adhering to the community's guidelines. The conversation highlights the need for participants to engage actively in problem-solving rather than seeking direct answers. Overall, the focus is on understanding thermodynamic principles related to the reaction.
ahappel
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Heat Transfer!

Consider the following reaction:

CH3OH(g) -> CO(g) + 2H2(g) Change in H= +90.7 kJ

(a) Calculate the amount of heat transferred when 45.0 g of CH3OH(g) are decomposed by this reaction at constant pressure. (in kJ)

(b) If the enthalpy change is 14.0 kJ, how many grams of hydrogen gas are produced? (in g)

(c) How many kilojoules of heat are released when 12.0 g of CO(g) reacts completely with H2 (g) to form CH2OH(g) at constant pressure. (in kJ)

PLEASE HELP!:confused:
 
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Sorry can't help

according to the rules in physics forum, we can't help those that didnt show their efforts. We are just guiding, not doing all the homework for you. you must at least show your way of calculations before we can help you.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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