Equilibrium Concentrations and pH Calculations

The video tutorial explains the percent association of chlorous acid in water, which is 8% at a concentration of 1.5 million molar. It demonstrates how to calculate the concentration of H+ ions and subsequently find the pH of the solution. The tutorial also covers the calculation of the acid dissociation constant (KA) using an ICE table and equilibrium expressions. The final KA value is determined to be 1.1 x 10^-2.

What is the initial concentration of chlorous acid in the solution?

• 1.58 M

• 1.58 million M

• 1.5 million M

• 1.5 M

How is percent association converted into a decimal?

• Divide by 10

• Multiply by 10

• Multiply by 100

• Divide by 100

What is the concentration of H+ ions after conversion?

• 0.08 M

• 0.1264 M

• 1.58 M

• 0.13 M

How do you calculate the pH of a solution?

• Negative log of H+ concentration

• Negative log of OH- concentration

• Log of OH- concentration

• Log of H+ concentration

What is the pH of the solution?

• 2.00

• 1.26

• 7.00

• 0.89

What does the equilibrium constant (Ka) represent?

• Rate of reaction

• Strength of an acid

• Strength of a base

• Concentration of reactants

What is the initial concentration of H+ and ClO2- ions in the ICE table?

• 0 M

• 1.58 M

• 0.08 M

• 0.13 M

What is the expression for the equilibrium concentration of the acid?

• x

• 1.58 - x

• 1.58 + x

• 0.13

What is the value of x in the equilibrium expression?

• 0.89

• 0.08

• 0.13

• 1.58

What is the calculated Ka value for chlorous acid?

• 1.1 x 10^-2

• 1.1 x 10^-3

• 1.1 x 10^-1

• 1.1 x 10^-4