MCQ
____________ forms a basic buffer solution.
- APotassium hydroxide and ammonium chloride
- ✓Ammonium hydroxide and ammonium chloride
- CAcetic acid and sodium acetate
- DAmmonium hydroxide and sodium chloride
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| X = x | -4 | -3 | -2 | -1 | 0 | 1 | 2 |
| P(X = x) | 0.25a | 0.20a | 0.15a | 0.10a | 0.05a | 0.10a | 0.15a |
Then P(X is not a natural number) = ______