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Just wanted to know if these are correct? thanks! 1. Which of the following is t

ID: 861737 • Letter: J

Question

Just wanted to know if these are correct? thanks!

1. Which of the following is the [H3O+] in pure water at room temperature? 2. In an aqueous solution the [H3O+] is 1.0 x 10^-6 M. What is the [OH-]? 3. In a particular titration experiment a 30.0 mL sample of an unknown monoprotic acid required 25.0 mL of 0.200 M NaOH for the end point to be reached. What is the concentration of the acid? 4. The pKa of lactic acid is 3.86. What is the pH of a buffer in which the lactic acid concentration is 2.0 M and sodium lactate concentration is 0.50 M?

Explanation / Answer

Answer is :

A

B

B

B