Question

1. A scale for measuring hydrogen ion concentration in a solution is called [ ]

a) Pauling scale b) pH scale c) Mulliken scale d) All

2. Identify the pH of a solution that turns blue litmus to red [ ]

a) 8 b) 4 c) 9 d) 10

3. The strength of acid or base depends on the concentration of [ ]

a) H3O+ b) OH–

c) Both a and b d) None

4. Which calcium compound does not increase the pH of acidic solids ? [ ]

a) Calcium carbonate b) Calcium hydroxide c) Calcium oxide d) Calcium sulphate

5. Who devised pH scale ? [ ]

a) Sorensen b) Bohr c) Sommerfeld d) Arrhenius4​

Answer 1

Answer:

b) pH scale

b) 4

a) h3o+

a) calcium carbonate

a) Sorenson