JEE Main Chemistry question
The pH of a solution formed by mixing 40 mL of 0.10 M HCl and 10 mL of 0.45 M NaOH is:
Answer: (C)
Solution
mmol HCl=4.0, mmol NaOH=4.5. Excess OH⁻=0.5 mmol/50 mL=0.01 M; pOH=2; pH=12.
The pH of a solution formed by mixing 40 mL of 0.10 M HCl and 10 mL of 0.45 M NaOH is:
mmol HCl=4.0, mmol NaOH=4.5. Excess OH⁻=0.5 mmol/50 mL=0.01 M; pOH=2; pH=12.