Which will make basic buffer?
- A50mL of 0.1M NaOH+25mL of 0.1M CH
3
COOH - B100mL of 0.1M CH
3
COOH+100mL of 0.1M NaOH - C100mL of 0.1M HCl+200mL of 0.1M NH
4
OH - D100mL of 0.1M HCl+100mL of 0.1M NaOH
Solution & Step-by-step Explanation
1. A basic buffer consists of a weak base and its salt with a strong acid.
2. In C: 10mmol of HCl reacts with 20mmol of NH
4
OH (weak base).
3. After reaction: 10mmol of NH
4
OH remains and 10mmol of NH
4
Cl (salt) is formed.
This mixture of weak base (NH
4
OH) and its salt (NH
4
Cl) forms a basic buffer.
2. In C: 10mmol of HCl reacts with 20mmol of NH
4
OH (weak base).
3. After reaction: 10mmol of NH
4
OH remains and 10mmol of NH
4
Cl (salt) is formed.
This mixture of weak base (NH
4
OH) and its salt (NH
4
Cl) forms a basic buffer.