Calculate the change in the standard entropy of the system, delta s degree for the synthesis of ammonia from n_2(g) and h_2(g) at 298 k: n_2(g) + 3h_2(g) rightarrow 2 nh_3(g)

for the reaction is -198.762 J/K

Explanation:

Standard change in entropy for the system () is given by-

where represents standard entropy.

Here , and

So,

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2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

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