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If the pH values of solutions X, Y and Z are 13, 6 and 2 respectively, then a) Which solution is a strong acid? Why? b) Which solution contains ions along with molecules of solution? c) Which solution is a strong base? Why?d) Does the pH value of a solution increase or decrease when a base is added to it? Why? |
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Answer» The strength of an acid (or) an alkali can be tested by using pH value of a solution. If the value of a pH of a solution is less, then that solution exhibits acidic nature. If the value of a pH of a solution is more, then that solution exhibits basic nature. pH value of a solution “X” is 13 pH value of a solution “Y” is 6 pH value of a solution “Z” is 2 a) Solution ‘Z’ is strong acid because its pH is 2. b) Among given solutions, solution X is weakest acid. Weak solution contains ions along with molecules of solution. So X exhibits like this character. c) Solution X is strong base. Because its pH is 13. d) If base is added to solution ‘Z’, then its pH will increase. |
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