Ionic product of water

According to the Bronsted-Lowry definition, what are acids and bases?

• Acids are electron donors and bases are electron acceptors

• Acids are electron acceptors and bases are electron donors

• Acids are proton donors and bases are proton acceptors

• Acids are proton acceptors and bases are proton donors

What is the equilibrium constant that describes the position of equilibrium for the dissociation of a weak acid?

• Kw

• Ka

• Kb

• Kc

What does the pH scale represent?

• Concentration of water molecules

• Concentration of OH- ions

• Concentration of H+ ions

• Concentration of Na+ ions

At what temperature is the value for Kw 1 times 10 to the power -14?

• 273 Kelvin

• 298 Kelvin

• 323 Kelvin

• 350 Kelvin

What is the pH value of neutral water at 298 Kelvin?

• 9

• 7

• 5

• 11

What happens to the pH value of water when the temperature is increased?

• pH increases

• pH becomes negative

• pH decreases

• pH remains the same

What is the value of Kw at 328 Kelvin?

• 1 times 10 to the power -14

• 7.23 times 10 to the power -14

• 5 times 10 to the power -15

• 3.5 times 10 to the power -14

What is the pH value of water at 328 Kelvin?

• 8.41

• 7.23

• 6.57

• 9.02

What is the molar ratio of sodium hydroxide to hydroxide ions?

• 1:1

• 3:1

• 1:2

• 2:1

What is the pH value of a solution of sodium hydroxide with an OH- ion concentration of 0.5 mole per decimeter cubed?

• 15.2

• 11.7

• 10.3

• 13.7