2 5 pts true or false briefly state the reason of your...

2. (5 pts) True or False (briefly state the reason of your choice) a. If $$\Delta G^\circ > 0$$, then $$K > 1$$. b. An endothermic reaction cannot have a $$K > 1$$. c. An exothermic reaction always has a negative $$\Delta G^\circ$$. d. The stronger the acid, the larger the $$K_a$$ value. e. The stronger the acid, the smaller the pH value.

Decide whether each of the following statements is true or false. If false, change the wording to make it true. (a) The magnitude of the equilibrium constant is always independent of temperature. (b) When two chemical equations are added to give a net equation, the equilibrium constant for the net equation is the product of the equilibrium constants of the summed equations. (c) The equilibrium constant for a reaction has the same value as $K$ for the reverse reaction. (d) Only the concentration of $\mathrm{CO}_{2}$ appears in the equilibrium constant expression for the reaction $\mathrm{CaCO}_{3}(\mathrm{s}) \rightleftharpoons \mathrm{CaO}(\mathrm{s})+\mathrm{CO}_{2}(\mathrm{g})$ (e) For the reaction $\mathrm{CaCO}_{3}(\mathrm{s}) \rightleftharpoons \mathrm{CaO}(\mathrm{s})+$ $\mathrm{CO}_{2}(\mathrm{g}),$ the value of $K$ is numerically the same, whether the amount of $\mathrm{CO}_{2}$ is expressed as moles/liter or as gas pressure.

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