Question

How much of a 5.2M NaOH solution is required in order to make 750 mL of a 1.7M NaOH solution

Answer 1

`\boxed{\text{245 mL}}`

Step-by-step explanation:

You are diluting the LiNO₃ solution, so you can use the dilution formula.

c₁V₁ = c₂V₂

Data:

c₁ = 5.2 mol·L⁻¹; V₁ = ?

c₂ = 1.7 mol·L⁻¹; V₂ = 750 mL

Calculations:

(a) Convert millilitres to litres

`\text{750 mL} * \frac{ \text{1 L}}{\text{1000 mL}} = \text{0.750 L}`

(b) Calculate the volume

5.2V₁ = 1.7 × 0.750 = 1.275

`V_(1) = (1.275)/(5.2) = \text{0.245 L} = \text{245 mL}\\\\\text{You must use } \boxed{\textbf{245 mL}} \text{ of the 5.2 mol/L NaOH.}`