Answer
a. Blood plasma is a basic solution.
b. Vinegar is an acidic solution.
c. Coffee is an acidic solution.
d. Tomatoes are acidic.
e. Chocolate cake is a basic solution.
Work Step by Step
If $pH \gt 7$, the solution is basic.
If $pH \lt 7$, the solution is acidic.
If $pH = 7$, the solution is neutral