Solutions X and Y each have a concentration of $0.10\ \text{mol dm}^{-3}$. A measured volume of solution X is placed in a conical flask, then solution Y is delivered from a burette into the flask. The mixture is titrated. The diagram illustrates the pH titration curve for the acid-base reaction between the two solutions. What are solutions X and Y?
- Asolution X: ammonia; solution Y: nitric acid
- Bsolution X: ammonia; solution Y: ethanoic acid
- Csolution X: potassium hydroxide; solution Y: nitric acid
- Dsolution X: potassium hydroxide; solution Y: ethanoic acid