Soda water is a solution of ________.

Q.

Write your observations when:

(a) blue litmus is introduced into a solution of hydrogen chloride gas.

(b) red litmus paper is introduced into a solution of ammonia in water.

(c) red litmus paper is introduced in caustic soda solution.
[3 Marks]

Q. The pH of a solution of baking soda is _______.

Q.

Question 46

Fill in the blanks to make the statements true.

10g of caustic soda dissolved in 100ml of water makes a solution of caustic soda. Amount of caustic soda needed for 1 litre of water to make the same type of solution is ___.

Q. Chemical $A$ is used for water softening to remove temporary hardness. $A$ reacts with sodium carbonate to generate caustic soda. When $C{O}_2$ is bubbled through a solution of $A$, it turns cloudy. What is the chemical formula of $A$?

Q. A chemical $\left(A\right)$ is used for water softening to remove temporary hardness. $\left(A\right)$ reacts with sodium carbonate to generate caustic soda. When $C{O}_2$ is bubbled through the solution of $\left(A\right)$, it turns cloudy. What is the chemical formula of $\left(A\right)$?