$100\mathrm{mL}$ of $\mathrm{HCl}$ solution of pH 2 is mixed with $100\mathrm{mL}$ of $\mathrm{HCl}$ solution of pH 4. The pH of the mixture is nearest to (use $\log 5.05=0.703$)

More questions on pH of strong and weak acids and bases, mixtures

• Equal volumes of 0.1 M HCl and 0.1 M acetic acid (K_a=1.8x10^-5) are mixed. The pH of the mixture is nearest to (use log5=0.699) JEE Main level
• A 0.05 M solution of a weak monobasic acid has pH 3.30. Neglecting alpha against 1, the K_a of the acid is nearest to (10^-3.30=5.01x10^-4) JEE Main level
• The concentration of ammonia solution (K_b=1.8x10^-5) that has pH 11 at 298 K is nearest to (neglect [OH-] against c) JEE Main level
• 300 mL of NaOH solution of pH 12 is mixed with 100 mL of HCl solution of pH 2 at 298 K. The pH of the mixture is nearest to (use log5=0.699) JEE Main level
• Calculate the pH of 0.04 M Ba(OH)2 solution at 298 K, assuming complete ionisation. Give the answer to two decimal places. JEE Main level
• What volume of water (in mL) must be added to 100 mL of HCl solution of pH 2 to change its pH to 3? Give the answer to the nearest integer. JEE Main level