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Which of the following substances can be used for identifying an acid solution?
- a)NaCl
- b)KNO3
- c)Na2CO3
- d)K2SO4
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following substances can be used for identifying an acid ...
Acid: The compound that produces hydrogen ion when it dissolved in the solution is called acid.
- The acidic property depends on the concentration of the Hydrogen ion in the solution.
- H+ ion cannot exist alone. It always conjugates with the water and forms hydronium ion(H3O+)
The identification of the acidic or basic nature of any salt solution by the reactions:
- Strong acid + strong base → water + neutral salt
- Weak acid + strong base → water + basic salt
- Strong acid + weak base → water + acidic salt
- Weak acid + weak base → water + salt (It may be a neutral, acidic, or basic depending on the reactants used in the reaction)
EXPLANATION:
- KNO3 is completely ionized in the water that gives the Nitric acid which is a strong acid. So KNO3 can be used for identifying an acid solution. Hence option 2 is correct.
- The K+ is an unreactive ion because it is produced from the dissolution of the strong base (KOH). So K2SO4 can't be used to identify the acidic solution.
- NaCl is a neutral solution that's why we can't use it also.
- Since Na2CO3 is formed by a weak acid Carbonic acid (H2CO3). That's why it can't be used also.
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Which of the following substances can be used for identifying an acid solution?a)NaClb)KNO3c)Na2CO3d)K2SO4Correct answer is option 'B'. Can you explain this answer?
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