Answer:
0.15
Explanation:
Whenever we are asked to calculate the pH of a particular solution in Chemistry it means that we are to look for its degree of acidity or basicity of such solution. Since the question is about an acidic solution, that is HNO3 we are to find the degree of acidity in the solution.
Therefore, the formula for the pH of a solution is given below;
pH = - log [ H^+].
In the question, we are given the hydrogen ion concentration to be = 0.71 M.
Hence, pH = - log [0.71].
pH = 0.14874165128092471.
pH =0.15.
It means that the solution is very acidic.
