How does increasing the concentration of reactants affect reaction rate? * 2 point. TW V a. Always decreases the rate O b. Has no effect on the rate O c. Increases the rate O d. Only affects the rate at high temperatures In the ocean carbonate system, what happens when more CO, is * 2 points absorbed? a. More carbonate ions become available O b. The pH increases O c. Hydrogen ion concentration decreases d. Hydrogen ion concentration increases According to Le Chatelier's Principle, what happens to an equilibrium * 2 points system when pressure is increased? a. The eqclibrium always shifts toward reactants b. The equilibrium shifts toward the side with fewer gas molecules c. The equilibrium shifts toward the side with more gas molecules O d. Pressure changes have no effect on equilibrium How do greenhouse gases affect Earth's energy balance? * 2 points