"The Solar electricity source of energy comes from the sun’s rays. It is more often in the form of a panel known as the solar panel. It has a photovoltaic system that generates and supplies energy in commercial and residential areas. Even though numerous countries are using this type of electricity to save electric-induced power, it is not used for a number of reasons. One is that 1 panel with a size of 6 by 10 solar cells is expensive. There are countries who cannot afford to buy them. Two, it requires a larger area to place the panel. Three, the efficiency is low. The smaller the panel is, the lower its efficiency and therefore produces lesser power to generate a specific area."

7 0

3 years ago

Read 2 more answers

From these two reactions at 298 K, V2O3(s) + 3CO(g) → 2V(s) + 3CO2(g); ΔH° = 369.8 kJ; ΔS° = 8.3 J/K V2O5(s) + 2CO(g) → V2O3(s)

gregori [183]

Answer:

ΔG° = -133,1 kJ

Explanation:

For the reactions:

(1) V₂O₃(s) + 3CO(g) → 2V(s) + 3CO₂(g); ΔH° = 369,8 kJ; ΔS° = 8,3 J/K

(2) V₂O₅(s) + 2CO(g) → V₂O₃(s) + 2CO₂(g); ΔH° = –234,2 kJ; ΔS° = 0,2 J/K

By Hess's law it is possible to obtain the ΔH° and ΔS° of:

2V(s) + 5CO₂(g) → V₂O₅(s) + 5CO(g)

Substracting -(1)-(2), that means:

ΔH° = -369,8 kJ - (-234,2 kJ) = -135,6 kJ

ΔS° = - 8,3 J/K - 0,2 J/K = -8,5 J/K

Using: ΔG° = ΔH° - TΔS° at 298K

ΔG° = -135,6 kJ - 298K×-8,5x10⁻³kJ/K

ΔG° = -133,1 kJ

I hope it helps!

7 0

4 years ago