Final answer:
The pH of a solution with a hydronium ion concentration of 5.2x10^-6 is calculated using the pH formula, resulting in a pH value of 5.3 when rounded to the nearest tenth.
Step-by-step explanation:
To calculate the pH of an agricultural product with a hydronium ion concentration of 5.2x10-6, we use the formula pH = -log [H3O+].
Inserting the given concentration into the formula, we get:
pH = -log(5.2x10-6)
Using a calculator to find the logarithm, we get:
pH = -(-5.283997608)
= 5.3 (rounded to the nearest tenth)
Therefore, the pH of the solution is 5.3.