How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the following reactions? (c) SO2(g) S(s) + O2(g) DH° = 297 kJ

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Explanation:

The reaction is given as;

SO2(g) ⇄ S(s) + O2(g) ΔH° = 297 kJ

This reaction is an endothermic reaction because of the positive value of the  ΔH°. Increasing the temperature for an equilibrium reaction with froward reaction being endothermic leads to increase in equilibrium constant (K).

Regarding equilibrium concentration;

In an equilibrium reaction, any change to the system is annuled. If there is an increase in temperature, in order to annul that, the forward reaction is favoured leading to increase in concentration of of the products and decrease in reactants.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.