If the pH of a solution increases by 2 units (e.g., from 1 to 3), then the ratio of the new to the original hydronium ion concentration is __________

In the Brønsted–Lowry definition of acids and bases, an acid __________

10 cm3 of 0.01 mol dm–3 nitric acid (HNO3 ) is diluted with 90 cm3 of water. What is the pH of the resulting solution?

A solution with an [OH– ] concentration of 1.20 × 10–7 M has a pOH and pH of __________

What is the conjugate base of the HSO4 – (aq) ion?

The indicator bromophenol blue, HIn(aq), has a form that is yellow and an In– (aq) form that is blue. Write an equation to show how bromophenol blue acts as an indicator.

When [H+ ] = 4.0 × 10–9 M in water at 25°C, then pH = __________

Draw the titration curve that shows how the pH changes when a weak base is added to a strong acid

In the following reaction in aqueous solution CH3COOH + NH3 = CH3COO- + NH4+, the acid reactant is __________ and its conjugate base product is __________.

A solution with pH of 9.50 has a pOH of __________

A solution with a pOH of 4.3 has a [H+ ] of __________

What is the pH of a 0.010 M solution of acetic acid? Ka for acetic acid is 1.8 × 10–5

Boric acid frequently is used as an eyewash to treat eye infections. The pH of a 0.050 M solution of boric acid is 5.28. What is the value of the boric acid ionization constant, Ka?