Chemistry
Assertion (A): Water is added to acids to dilute them.
Reason (R): The addition of water to acids is a highly exothermic reaction. Splashes of acid solution may come in contact with skin and container may also break.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Acids Bases Salts
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Answer
A is false but R is true.
Explanation — Acids are diluted by adding acid to water, not by adding water to acid. The goal is to reduce the concentration of hydrogen ions (H⁺) in solution safely. Hence the assertion (A) is false.
Reason (R) is true because water is not added to acid as it is an exothermic process and in this process so much heat is produced that splashing of acidic solution may occur, also the container may break which can be fatal to the person.
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Related Questions
Assertion (A): Acids have a pH of more than 7.
Reason (R): Acids produce hydronium ions as the only positively charged ion in solution.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
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Reason (R): Iron (III) chloride is hygroscopic in nature.
- Both A and R are true and R is the correct explanation of A.
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