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List of top Chemistry Questions on Acids and Bases asked in BITSAT

What is the pH of a 0.01 M solution of HCl?
The pH of a 0.01 M solution of a weak acid HA is 4. Calculate its dissociation constant (Ka).
A buffer solution is prepared by mixing 0.1 mol of acetic acid (\( \mathrm{p}K_a = 4.74 \)) and 0.2 mol of sodium acetate in 1 L solution. What is the pH of the buffer?
Which of the following is a strong acid?