25. Решение задачи по химии №002 600

8. For the reaction shown in Table 1.3, corresponding to your option:
1) calculate the standard thermal effect of the reaction from the known values of the standard heats of formation of the starting materials and reaction products;
2) determine ΔНт from the assumption:
a) Δс = 0;
b) Δс = const;
c) Δc \u003d f (T).
3) build on one graph the dependencies Esprod \u003d f (T) for products and
Esin = f (T) for initial reagents;
4) plot the dependence ΔNT = f (Т) in the interval (298К…Т);
5) determine ∆S298 and ∆ST for the reaction;
6) calculate the value of ΔG298 and ΔGТ and draw a conclusion about the direction of the reaction under standard conditions and at temperature Т.

Table 1.3 Options for task 1.1.2.

Option number Reaction equation T, K
8 Mg (OH) 2 (c) \u003d MgO (c) H2O (g) 500

Option number Reaction equation T, K
8 Mg (OH) 2 (c) \u003d MgO (c) H2O (g) 500

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