The oxide of a metal 'm' was water soluble. When a blue litmus paper was dipped in a solution, it did not undergo any change. Explain the above explanation.

Open in App

Solution

Oxides of metals are basic in nature and water soluble. Hence, the given oxide is soluble in water and does not turn blue litmus to red.

Suggest Corrections

Similar questions

Q. The oxide of a metal M is water soluble. When a blue litmus strip was dipped in this solution, it did not undergo any change in colour, but it changed the colour of phenolphthalein. What is the nature of the oxide?

When blue litmus paper was dipped into the water, the colour of litmus paper remained the same. Similarly, when red litmus paper was dipped into water, the colour remained the same. By above observation we can concluded that:

Q. A non-metal oxide was dissolved in water and then tested with both blue and red litmus papers. What will happen to the two litmus papers?

(a) Ammonia is found in many household products such as window cleaners. What is its nature? What is the colour change of a litmus paper when it is dipped in ammonia solution?

(b) Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain. [2 MARKS]

Q. Read the following statements:
I. When a red litmus paper is dipped into reaction mixture of a saponification reaction, it turns blue and the reaction is exothermic.
II. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is exothermic.
III. When a red litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
IV. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
Which of the above statements are correct?

Join BYJU'S Learning Program