In a Titration, a Standard Solution of Hydrochloric Acid (Concentration

Multiple Choice

In a titration, a standard solution of hydrochloric acid (concentration 0.2 mol dm^-3) was added to 25 cm³ of a sodium hydroxide solution, concentration unknown. On addition of 18.5 cm³ HCl, the equivalence point was reached. What is the concentration of the sodium hydroxide solution?

A) 0.2
B) 3.7 × 10^-3.
C) 0.296
D) 0.148