Answer:
e. the hydroxide and hydronium ion concentrations are equal.
Explanation:
An aqueous solution is considered neutral if:
a. the hydronium ion concentration is 10⁻⁸ M. NO. When the hydronium ion concentration is lower than 10⁻⁷ M, the solution is basic.
b. the hydroxide ion concentration is greater than the hydronium ion concentration. NO.
c. the hydroxide ion concentration is 10⁻⁶ M. NO. When the hydroxide ion concentration is higher than 10⁻⁷ M, the solution is basic.
d. the hydroxide ion concentration is 10-⁻¹⁰ M. NO. When the hydroxide ion concentration is lower than 10⁻⁷ M, the solution is acid.
e. the hydroxide and hydronium ion concentrations are equal. YES.