Consider this equilibrium for a buffer solution: ch3cooh + h2o ch3coo- + h3o + . when a small amount of acid is added to this system, which statement is true when equilibrium is reestablished? a. [ch3coo-] and ph have both increased. b. [ch3cooh] and ph have both decreased. c. [ch3coo-] has decreased and ph remains relatively constant. d. [ch3cooh] has decreased and ph remains relatively constant. e. [ch3coo-] has increased and ph remains relatively constant.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.