Which statement(s) about the equilibrium constant, K c, is/are true?
i. Kc changes as the concentration of a reactant changes
ii. Kc changes if the reaction is immersed in a hot water bath
iii. Kc changes if a catalyst is added to the reaction
a. i only
b. ii only
c. iii only
d. i and ii
e. ii and iii
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