pH calculations and Titrations

Front

What is pH?

Back

pH is a measure of the acidity or basicity of a solution, defined as the negative logarithm of the hydrogen ion concentration. A pH less than 7 indicates an acid, while a pH greater than 7 indicates a base.

Front

What is pOH?

Back

pOH is a measure of the hydroxide ion concentration in a solution, defined as the negative logarithm of the hydroxide ion concentration. It is related to pH by the equation: pH + pOH = 14.

Front

How do you calculate pOH from pH?

Back

To calculate pOH from pH, use the formula: pOH = 14 - pH.

Front

What is the relationship between pH and hydrogen ion concentration?

Back

The relationship is given by the formula: [H+] = 10^(-pH), where [H+] is the concentration of hydrogen ions in moles per liter.

Front

What is the relationship between pOH and hydroxide ion concentration?

Back

The relationship is given by the formula: [OH-] = 10^(-pOH), where [OH-] is the concentration of hydroxide ions in moles per liter.

Front

How do you determine if a solution is acidic or basic using pH?

Back

If pH < 7, the solution is acidic. If pH > 7, the solution is basic. If pH = 7, the solution is neutral.

Front

What is the formula for calculating the concentration of hydroxide ions from pH?

Back

[OH-] = 10^(14 - pH).

Front

What is a titration?

Back

A titration is a laboratory method used to determine the concentration of a solution by reacting it with a solution of known concentration.

Front

What is the equivalence point in a titration?

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The equivalence point is the point in a titration at which the amount of titrant added is stoichiometrically equivalent to the amount of substance in the sample.

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How do you calculate the concentration of an acid from a titration with a base?

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Use the formula: C1V1 = C2V2, where C1 and V1 are the concentration and volume of the acid, and C2 and V2 are the concentration and volume of the base.