chemistry- acid base problems

When a hydronium ion concentration equals 1 x 10-10 moles per liter, what is the pH of the solufion? Is the solution acidic or basic?

The pH of this solution is 10, which is basic.

calculate the pH of [H3O+] = 1 ✕ 10-8 M

pH = 8

calculate the pH of [OH -] = 1 ✕ 10-1 M

pH = 13

Write the formula and name of the conjugate base for HNO2

[NO2]- nitrite

A strong acid is different from a weak acid because a strong acid.

is completely dissociated in water.

It produces H3O+ ions in water.

acid

is [H3O+] = 1.0 ✕ 10-5 M acidic basic or neutral?

acidic

is [OH -] = 1.0 ✕ 10-13 M acidic basic or neutral?

acidic

shampoo, pH 5.7

acidic

It turns litmus red.

acids

It is a proton (H+) acceptor.

base

It neutralizes bases.

bases

drain cleaner, pH 11.2

basic

is [H3O+] = 1.0 ✕ 10-9 M acidic basic or neutral?

basic

Write the formula and name of the conjugate base for HCO3-

carbonate, [CO3]2-

As the pH increases, the hydroxide ion concentration

gets larger.

As the hydronium ion concentration increases, the pH

goes down.