PH Chemistry Quiz

Note the pH and pOH values labeled with letters on the pH scale below. mc023-1.jpg Based on log rules and the way pH is calculated, what is the difference in [OH- ] concentration between point A and point B. (A)101 (B)105 (C)106 (D)107

Which statement best describes the pH of pure water? (A)It is neutral because the concentration of hydronium ions equals that of hydroxide ions. (B)It is neutral because the pure liquid contains neither hydronium ions nor hydroxide ions. (C)It is acidic because it has a hydronium ion concentration of mc027-1.jpg. (D)It is basic because it has a hydroxide ion concentration of mc027-2.jpg.

A solution containing HCl would likely have (A)a high pH and a low pOH. (B)a low pH and a high pOH. (C)a high pH and a high pOH. (D)a low pH and a low pOH.

Which describes an alkaline solution? (A)pH less than 7 (B)pH equal to 7 (C)basic (D)acidic

The pOH of a solution is 10.75. What is the concentration of OH- ions in the solution? Use mc013-1.jpg. (A)3.162 mc013-2.jpg 10-108 M (B)1.778 mc013-3.jpg 10-11 M (C)1.075 mc013-4.jpg 102 M (D)5.623 mc013-5.jpg 1010 M

Which of these correctly defines the pH of a solution? (A)the negative log of the hydronium ion concentration (B)the log of the hydronium ion concentration (C)the negative log of the hydroxide ion concentration (D)the log of the hydroxide ion concentration

How can the pH of a solution be calculated if the pOH is known? (A)by taking the negative logarithm of pOH (B)by adding the pOH to 14 (C)by raising 10 to the power of -pOH (D)by subtracting the pOH from 14

The pH of a solution decreases by 2.0. How does the hydronium ion concentration of the solution change? (A)increases to 2 times the original concentration (B)increases to 100 times the original concentration (C)decreases to mc009-1.jpg of the original concentration (D)decreases to mc009-2.jpg of the original concentration

Which statement about the self-ionization of water is correct? (A)Two water molecules interact to form a water molecule and a hydroxide ion. (B)Two water molecules interact to form a hydronium ion and a hydroxide ion. (C)Two water molecules interact to form two hydronium ions. (D)Two water molecules interact to form two hydroxide ions.

A substance with a high [H+ ] would likely have which additional characteristics? (A)a high [OH- ] and a high pOH (B)a low [OH- ] and a high pOH (C)a high [OH- ] and a low pOH (D)a low [OH- ] and a low pOH