Answer
a. acidic
b. acidic.
c. neutral
d. basic
Work Step by Step
Acidic solutions have a pH lower than 7, while basic solutions have a pH higher than 7, and neutral solutions have a pH of 7.
a. acidic because pH is lower than 7 and thus [H+] is higher.
b. acidic because pH is lower than 7 and thus [H+] is higher.
c. neutral because pH is 7.
d. basic because pH is higher than 7 and thus [H+] is lower.