21. In opening a soda bottle, there is a rapid bubbling of gas; why does the solubility of a gas in a liquid decrease if the pressure of the gas decreases? a. the system's volume must decrease if pressure decreases b. the decrease in pressure is always accompanied by the decrease in temperature c. the probability of collisions between the gas and the liquid is decreased d. released energy from process of bubbling cools the gas   22. Are equilibrium constants affected by the number of coefficients in a balanced equation or when related reactions are summed together? a. Coefficients in a balanced chemical reaction are multiplied by 2; Equilibrium constant is not affected b. Related reactions are added together; equilibrium constants of each are added together as well. c. Coefficients in a balanced chemical reaction are multiplied by 2; equilibrium constant is raised to the 2nd power (squared)

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