Answer:
[tex]\boxed{\text{245 mL}}[/tex]
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
[tex]\text{750 mL} \times \dfrac{ \text{1 L}}{\text{1000 mL}} = \text{0.750 L}[/tex]
(b) Calculate the volume
5.2V₁ = 1.7 × 0.750 = 1.275
[tex]V_{1} = \dfrac{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.}[/tex]
