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QNEET-2019-Ch-780: NEET 2019 Chemistry - Class 11 NEET-2019-Ch-780 Solution: Which will make basic buffer? 100 mL of 0.1 M HCl + 200 mL of…
Which will make basic buffer? 100 mL of 0.1 M HCl + 200 mL of 0.1 M 100 mL of 0.1 M HCl + 100 mL of 0.1 M 50 mL of 0.1 M NaOH + 25 mL of 0.1 M 100 mL of 0.1 M + 100 mL of 0.1 M NaOH
Multiple Choice Options
- A 100 mL of 0.1 M HCl + 200 mL of 0.1 M NH 4 OH
- B 100 mL of 0.1 M HCl + 100 mL of 0.1 M NHOH
- C 50 mL of 0.1 M NaOH + 25 mL of 0.1 M CH 3 COOH
- D 100 mL of 0.1 M CH 3 COOH + 100 mL of 0.1 M NaOH
Step-by-Step Verified Solution
Basic buffer is mixture of weak base and salt of weak base with strong acid.
milli mole of HCl = 100 _ 0.1 = 10 milli mole
milli mole of NH 4 OH = 200 _ 0.1 = 20 milli mole
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HCl | + | NH 4 OH | _ | NH 4 Cl | + | H 2 O
10 | 20 | 0
0 | 20 - 10 = 10 | 10
Here in the final solution 10 milli mole weak base NH 4 OH and 10 milli mole salt of weak base and strong acid NH 4 Cl present. So it is a basic buffer.