Honour Lab Quality Assurance Analyst Interview Questions and Answers

pH is a measure of the acidity or basicity of a solution.

• pH stands for 'potential of hydrogen'.

• It is measured on a scale of 0-14, with 7 being neutral.

• Solutions with a pH less than 7 are acidic, while those with a pH greater than 7 are basic.

• The pH of a solution can be determined using a pH meter or pH paper.

• Examples of pH values: lemon juice (pH 2), milk (pH 6.5), baking soda (pH 9).

Acids and bases are two types of chemical substances with opposite properties.

• Acids have a pH less than 7, while bases have a pH greater than 7.

• Acids are sour in taste, while bases are bitter in taste.

• Acids react with metals to produce hydrogen gas, while bases react with acids to produce salt and water.

• Examples of acids include vinegar, lemon juice, and battery acid, while examples of bases include soap, bleach, and b...read more

Normality refers to the concentration of a solution in terms of the number of equivalents of solute per liter of solution.

• Normality is a measure of concentration used in acid-base reactions.

• It is defined as the number of equivalents of solute per liter of solution.

• For example, a 1N solution of HCl contains 1 mole of H+ ions per liter of solution.

• Normality is different from molarity, which is a measure of concentration ...read more

Molarity is a measure of the concentration of a solution in terms of the number of moles of solute per liter of solution.

• Molarity is expressed in units of moles per liter (mol/L or M)

• It is calculated by dividing the number of moles of solute by the volume of the solution in liters

• For example, a solution containing 0.5 moles of solute in 1 liter of solution has a molarity of 0.5 M