The pH values of milk, tomato juice, lemon juice, and egg are 6.8, 4.2, 2.2, and 7.8 respectively.

The corresponding hydrogen ion concentration is maximum in: 

The pH of a solution made by mixing 50 mL of 0.01 M barium hydroxide solution with 50 mL of H₂O is

The pOH of a solution at 25 °C that contains 1×10^-10 M of hydronium ions is:

Which of the following biological fluids has the minimum concentration of hydrogen ions?

(a) Human muscle-fluid,  pH = 6.83 

(b) Human stomach fluid, pH = 1.2

(c) Human blood, pH = 7.38           

(d) Human saliva, pH = 6.4.

A soft drink has a hydronium ion concentration of 3.8 × 10⁻³ M. Calculate its pH.

When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, the pH of the resulting solution will be:

The number of ${\mathrm{H}}^{\oplus }$ ions present in 1 ml of a solution whose pH= 4 , is given as:

($N_A=$ $Avogadro\text{'}s$ $number$)

1. ${10}^{-7}{N}_A$

2. ${10}^{-8}{N}_A$

3. ${10}^{-16}{N}_A$

4. ${10}^{-14}{N}_A$

The ionic product of water at 310 K is 2.7 × 10^–14.

The pH of neutral water at this temperature will be:

What will be the concentration of H⁺ ions in a vinegar sample with a pH of 3.76?