Question 7(multiple choice worth 4 points) (08.05 mc) what is the ph of a solution with a 3.8 × 10−4 m hydronium ion concentration? 3.4 3.8 11 12

The pH of this solution is 3.4.

Explanation:

Consider the definition of the pH of a solution:

,

where

is the hydronium ion concentration of the solution in moles per liter. Note that some textbooks write as .

The unit "M" here is the same as moles per liter.

On a scientific calculator, evaluate

to find the pH of this solution.

.

The pH of this solution is approximately 3.4.

The correct answer is a

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.