Question

Which solution contains 1 mol of sodium hydroxide?

a. 1 cm³ of 0.1 mol/dm³ NaOH
b. 10 cm³ of 0.1 mol/dm³ NaOH
c. 100 cm³ of 0.1 mol/dm³ NaOH
d. 1000 cm³ of 0.1 mol/dm³ NaOH

Answer 1

The solution that contains 1 mol of sodium hydroxide is d. 1000 cm³ of 0.1 mol/dm³ NaOH.

Step-by-step explanation:

The solution that contains 1 mol of sodium hydroxide is d. 1000 cm³ of 0.1 mol/dm³ NaOH.

To determine the number of moles of NaOH in each solution, you can use the formula:

moles = concentration (mol/dm³) x volume (dm³)

For option d, the concentration is 0.1 mol/dm³ and the volume is 1000 cm³ converted to dm³ by dividing by 1000, resulting in 1 dm³.

Therefore, the number of moles of NaOH in option d is 0.1 mol/dm³ x 1 dm³ = 0.1 mol.