Which of the following substances forms a basic solution when dissolved in water?
Answer and explanation
Correct answer: Sodium carbonate
Sodium carbonate, \(\mathrm{Na_2CO_3}\), is a salt formed from the strong base \(\mathrm{NaOH}\) and the weak acid \(\mathrm{H_2CO_3}\). In water, the carbonate ion \(\mathrm{CO_3^{2-}}\) reacts with water to form \(\mathrm{OH^-}\) ions, making the solution basic. In contrast, ammonium chloride forms an acidic solution.
Frequently asked questions
What is the correct answer to this question?
Sodium carbonate
Why is this the correct answer?
Sodium carbonate, \(\mathrm{Na_2CO_3}\), is a salt formed from the strong base \(\mathrm{NaOH}\) and the weak acid \(\mathrm{H_2CO_3}\). In water, the carbonate ion \(\mathrm{CO_3^{2-}}\) reacts with water to form \(\mathrm{OH^-}\) ions, making the solution basic. In contrast, ammonium chloride forms an acidic solution.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
