While studying saponification reaction, a student measures the temperature of the reaction mixture and also finds its nature using blue/red litmus paper. On the basis of his observations the correct conclusion would be:

the reaction is exothermic and the reaction mixture is acidic

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the reaction is endothermic and the reaction mixture is acidic

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the reaction is exothermic and the reaction mixture is neutral

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the reaction is exothermic and the reaction mixture is basic

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the reaction is endothermic and the reaction mixture is basic.

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Solution

The correct option is E the reaction is endothermic and the reaction mixture is basic.
To carry out saponification reaction, heat is supplied. Hence, the reaction is endothermic. Since excess NaOH is used, the reaction mixture is basic.

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Similar questions

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

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?

Q. A student puts a drop of the reaction mixture of a saponification reaction first on a blue litmus paper and then on a red litmus paper. He may observe that:

Q. The gas phase reaction