## General Chemistry: Principles and Modern Applications (10th Edition)

(a) yellow because the PH value is low (within the acid range). (b) yellow since the PH value of the formed buffer solution $\mathrm{CH_3COOH/CH_3COO^-}$ is about 5. (c) yellow; the buffer completely neutralizes the small amount of added $\mathrm{OH^-}$ (d)red; the solution becomes basic because the buffer no longer retains the PH value.
(a) yellow because the PH value is low (within the acid range). (b) yellow since the PH value of the formed buffer solution $\mathrm{CH_3COOH/CH_3COO^-}$ is about 5. (c) yellow; the buffer completely neutralizes the small amount of added $\mathrm{OH^-}$ (d)red; the solution becomes basic because the buffer no longer retains the PH value.