Question

b) concentrate strong acid
c) dilute weak acid
d) concentrate weak acid

1. a solution of ba(oh)₂ has a concentration of 0.1mol/l. this solution can be classify as:

a) dilute strong base
b) concentrate strong base
c) dilute weak base
d) concentrate weak base.

1. a solution of nh₃ is :

a) a strong base
b) a weak acid
c) a strong acid
d) a weak base

1. a solution has a ph of 4

Explanation:

For Question 7:

1. $\text{Ba(OH)}_2$ dissociates completely in water, so it is a strong base.
2. A 0.1 mol/L concentration is considered dilute (not high concentration).

For Question 8:

$\text{NH}_3$ only partially ionizes in water to produce hydroxide ions, so it is a weak base.

Answer:

1. a) dilute strong base
2. d) a weak base