Citric acid occurs in lemon juice. citric acid $\text{HO}_2\text{CCH}_2\text{C(OH)(CO}_2\text{H)CH}_2\text{CO}_2\text{H}$ What volume of $0.40\ \text{mol dm}^{-3}$ sodium hydroxide solution is needed to neutralise a solution that contains $0.0050\ \text{mol}$ of citric acid?
- A$12.5\ \text{cm}^3$
- B$25.0\ \text{cm}^3$
- C$37.5\ \text{cm}^3$
- D$50.0\ \text{cm}^3$