What is the ph of a solution with a concentration of 4.2 × 10–5 m h3o+?

2.31
4.38
5.62
6.87

Answer : The correct option is, 4.38

Explanation : Given,

concentration of =

pH : It is defined as the negative logarithm of hydrogen ion or hydronium ion concentration.

Formula used :

Therefore, the pH of a solution is, 4.38

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.