The [h3o+] of a solution with ph = 2.0 is.

mol/ L

Explanation:

Measure of  [H₃O⁺] , i.e hydrogen ion concentration, indicates the acidity of the solution. The greater the concentration, the greater is the acidity.  [H₃O⁺], this quantity can range from 10⁻¹ to 10⁻¹⁴ at ambient temperature(298K). This range is always temperature dependent.

Measure of acidity of a solution is expressed more conveniently using the notation of pH.

Using the above formula

mol/ L

the temperature of the gas, in k, not celsius.