Shweta took a little sodium hydroxide in a beaker and dipped a red litmus paper into it. She observed red litmus paper turned blue. She took dilute hydrochloric acid in the same beaker and dipped a blue litmus paper into it. The blue litmus paper did not turn red. Why?
Answers
Answer:
Because dilute sodium hydroxide is an acid so she dipped red litmus so it can't change. if she dipped same blue litmus as like first case it will change to red as both the solutions are acid.
Answer:
Because the resulting solution is salt.
Explanation:
When a red litmus paper is dipped in a basic solution, it turns into blue colour. Sodium hydroxide is a strong base and it turns red litmus paper into red. When a strong acid such as hydrochloric acid is added to the strong base such as sodium hydroxide, a salt of sodium chloride is formed . Sodium tmus paper.chloride is neutral in nature and its pH is 7. Salts do not alter the colour of litmus paper.
Because of the formation of sodium chloride which is a salt , blue litmus paper did not change its colour.