Calculate the standard entropy change for the reaction at 25 °C. Standard molar entropy values can be found in this table. 2CH3OH(g)+3O2(g)⟶2CO2(g)+4H2O(g)

Answer 1

Since no table is provided, the following is a generic method that you can follow to solve the problem.

∆Hºrxn = ∆Hº_products - ∆Hº_reactants

So, look up ∆Hº for CO2 and multiply that by 2

Look up the ∆Hº value for H2O(g) and multiply by 4

Add these together to get ∑∆H_products

Look up ∆Hº for CH3OH(g) and multiply by 2

Look up ∆Hº for O2 and it will be zero, so no need to worry about it.

Add these together to ∆Hº_reactants

∆Hºrxn = ∆Hº_products - ∆Hº_reactants = answer