Question
Analyze these statements about a buffer solution:
(I) A buffer solution stabilizes pH levels when small amounts of acids or bases are introduced. (II) The pH of a neutral salt solution is consistently 7. (III) Acetic acid (CH₃COOH) is categorized as a strong acid, completely dissociating in water.Solution
Only statement (I) is correct; a buffer solution indeed stabilizes pH against minor additions of acid or base. Statement (II) is incorrect as the pH of a salt solution can vary based on the acid and base from which it is derived. Statement (III) is also incorrect, as acetic acid is a weak acid that does not fully dissociate in water.
- In the given number series, find the wrong number.
4, 9, 19, 39, 79, 159, 319 The series given below contains a sequence of numbers.
Accordingly identify the incorrect number.
9, 14, 24, 38, 59
126, 295, 520, 807, 1170, 1611
Find the wrong number in the given number series.
4, 9, 19, 39, 69, 159
- 137, 148, 190, 261, 361, 490
Find the wrong number in the given number series.
3, 8, 18, 40, 78, 158- Find the wrong number, in the given number series.
320, 160, 80, 50, 20, 10 Find the wrong number in the given number series.
21, 31, 11, 41, 1, 611000, 200, 56, 24, 12, 7.2
8, 12, 23, 40, 66, 103
