A solution has a pH of 6. Which of the following best describes the solution?

Which of the following statements about a basic solution is true?

Which of the following statements about a basic solution is true?

What color is phenolphthalein in a base?

The concentration of H+ ions in a solution is 1.0 x 10-9. What is the pH of the solution?

The concentration of H+ ions in a solution is 1.0 x 10-6. What is the pH of the solution?

Use the equation below to solve the following problem.   What is the molarity of a solution that contains 83.9 g of Na2(SO4) dissolved in 3.5 L of solution? To receive full credit:  You must use the math equation editor in the tool bar to insert the final equation (with numbers and units) that you used to solve the problem.  Be sure to include the answer. Or, solve the problem on your own paper and upload the picture into the Unit 3 Exam pictures dropbox immediately after submitting the exam. 

Salt is added to a solution of salt water. After stirring, the salt dissolves.  This indicated that the initial solution was 

A solution has a pH of 1. Which of the following best describes the solution?

If the concentration of OH- ions in a solution is 4.0 x 10-11 M, what is the concentration of H3O+?