Titrations: A Comprehensive Guide for Advanced Diploma in Healthcare Students

Question 1

Which of the following is NOT a crucial factor for an effective titration?

Accepted Answer

Using a burette with a narrow tip

Answer

Precise measurement of the titrant's volume

Answer

Using a suitable indicator

Answer

Constantly stirring the solution

Question 2

Which factor can cause errors in titrations but is minimized by standardizing the titrant?

Accepted Answer

Impurities in the titrant

Answer

Inaccurate burette readings

Answer

Incomplete reaction

Answer

Insufficient drops near the equivalence point

Question 3

What is the primary purpose of using an indicator in a titration?

Accepted Answer

To change the color of the solution at the equivalence point

Answer

To neutralize the solution

Answer

To increase the accuracy of the titration

Answer

To speed up the reaction

Question 4

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Phosphoric acid

Question 5

What is the molarity of a solution that contains 0.2 moles of solute in 250 mL of solution?

Accepted Answer

0.2 M

Answer

0.1 M

Answer

0.5 M

Answer

1.0 M

Question 6

Which of the following is the definition of the equivalence point in a titration?

Accepted Answer

The point at which the reactants are fully reacted and the equivalence point has been reached.

Answer

The point at which the indicator changes color

Answer

The point at which the solution is neutralized

Answer

The point at which the titration is stopped

Question 7

What is the primary use of redox titrations?

Accepted Answer

To determine the concentration of an oxidizing or reducing agent

Answer

To determine the concentration of an acid or base

Answer

To determine the purity of a substance

Answer

To determine the molecular weight of a substance

Question 8

Which of the following is a common oxidizing agent used in redox titrations?

Accepted Answer

Potassium permanganate

Answer

Sodium hydroxide

Answer

Hydrochloric acid

Answer

Acetic acid

Question 9

What is the primary function of a burette in a titration?

Accepted Answer

To measure the volume of the titrant added

Answer

To mix the solution

Answer

To change the color of the solution

Answer

To neutralize the solution

Question 10

Which of the following is used to determine when the equivalence point of a titration has been reached?

Accepted Answer

Indicator

Answer

Titrant

Answer

Analyte

Answer

Burette

Question 11

What is the purpose of using a burette in a titration experiment?

Accepted Answer

To measure the volume of titrant added

Answer

To contain the unknown concentration solution

Answer

To mix the reactants together

Answer

To hold the indicator

Question 12

Which of the following solutions has the highest concentration of hydrogen ions?

Accepted Answer

pH 1

Answer

pH 7

Answer

pH 10

Answer

pH 14

Question 13

What is the molarity of a solution containing 0.2 moles of HCl in 250 mL of solution?

Accepted Answer

0.5 M

Answer

1 M

Answer

1.5 M

Answer

2 M

Question 14

Which of the following is a neutralization reaction?

Accepted Answer

Acid + Base → Salt + Water

Answer

Reductant + Oxidant → Products

Answer

Metal + Acid → Salt + Hydrogen

Answer

Base + Metal → Salt + Hydrogen

Question 15

What is the endpoint of a redox titration?

Accepted Answer

The point at which the moles of reductant equal the moles of oxidant

Answer

The point at which the color of the solution changes

Answer

The point at which the equivalence point is reached

Answer

The point at which the burette is filled to the top

Question 16

Which of the following substances is a weak base?

Accepted Answer

Ammonia

Answer

Sodium hydroxide

Answer

Potassium hydroxide

Answer

Hydrochloric acid

Question 17

What is the role of potassium hydrogen phthalate (KHP) in titration?

Accepted Answer

As a primary standard substance

Answer

As an indicator

Answer

As a titrant

Answer

As a buffer

Question 18

During an acid-base titration, what is the primary role of an indicator?

Accepted Answer

Indicating the endpoint by changing color

Answer

Neutralizing the analyte

Answer

Maintaining a stable pH level

Question 19

In redox titrations, how do redox reactions contribute to determining the concentration of the analyte?

Accepted Answer

Redox reactions facilitate electron transfer, enabling the determination of the analyte's concentration.

Answer

Redox reactions produce distinct color changes that indicate the equivalence point.

Answer

Redox reactions release or absorb heat, which can be measured to determine the equivalence point.

Answer

Redox reactions generate gases, which are collected and measured to determine the analyte's concentration.

Question 20

Which of the following is NOT a primary purpose of titration in chemistry and healthcare?

Accepted Answer

Synthesizing new compounds

Answer

Neutralizing chemical substances

Answer

Determining unknown concentrations

Answer

Preparing solutions with specific concentrations

Question 21

Which type of indicator is most suitable for titrating a strong acid with a strong base?

Accepted Answer

Phenolphthalein

Answer

Methyl orange

Answer

Litmus

Answer

Universal indicator

Question 22

In a redox titration, the oxidizing agent is the species that:

Accepted Answer

Loses electrons

Answer

Gains electrons

Answer

Undergoes reduction

Answer

Undergoes oxidation

Question 23

In a redox titration involving the reaction between Fe2+ and MnO4-, which of the following is the reducing agent?

Accepted Answer

Fe2+

Answer

MnO4-

Answer

H+

Answer

OH-

Question 24

The balanced equation for the titration of oxalic acid (H2C2O4) with potassium permanganate (KMnO4) in acidic solution is:

Accepted Answer

2H2C2O4 + 2KMnO4 + 3H2SO4 → K2SO4 + 2MnSO4 + 8H2O + 5CO2

Answer

H2C2O4 + 2KMnO4 → K2C2O4 + 2MnO2 + H2O

Answer

H2C2O4 + KMnO4 → HC2O4- + MnO2 + H2O

Answer

2H2C2O4 + 2KMnO4 → 2KHC2O4 + 2MnO2 + H2O

Question 25

Which process involves determining an unknown solution's concentration through reaction with a solution of known concentration?

Accepted Answer

Titration

Answer

Gravimetric Analysis

Answer

Colorimetry

Answer

Gas Chromatography

Question 26

Which is NOT a recognized titration type?

Accepted Answer

Gravimetric Titrations

Answer

Acid-Base Titrations

Answer

Redox Titrations

Answer

Complexometric Titrations

Question 27

Which formula is used to calculate a solution's concentration?

Accepted Answer

C = n/V

Answer

C = V/n

Answer

n = C/V

Answer

V = n/C

Question 28

What is a common healthcare application of titrations?

Accepted Answer

Monitoring Blood Glucose Levels

Answer

Analyzing Drug Interactions

Answer

Testing Water Quality

Answer

Analyzing Soil Composition

Question 29

What is the equivalence point of a titration?

Accepted Answer

When moles of acid and base are equal

Answer

When the solution's pH is 7

Answer

When the solution exhibits a specific color change

Answer

When the reaction goes to completion

Question 30

In a titration, the equivalence point represents:

Accepted Answer

The point at which equal moles of acid and base have been added

Answer

The point at which the pH of the solution is neutral

Answer

The point at which the indicator colour change occurs

Answer

The point at which the titration is complete

Question 31

To determine the concentration of an unknown acid using a titration, which calculation is used?

Accepted Answer

M₁V₁ = M₂V₂

Answer

pH = -log[H+]

Answer

PV = nRT

Answer

E = mcΔt

Question 32

What differentiates a primary standard solution from a secondary standard solution?

Accepted Answer

A primary standard solution is prepared from a compound of known purity, whereas a secondary standard solution is prepared from a compound of unknown purity.

Answer

A secondary standard solution is prepared from a compound of known purity, whereas a primary standard solution is prepared from a compound of unknown purity.

Answer

Both primary and secondary standard solutions are prepared from compounds of known purity.

Answer

There is no distinction between a primary and a secondary standard solution.

Question 33

In a titration, what is the primary function of a burette?

Accepted Answer

To precisely measure the volume of added solution

Answer

To mix the solutions being titrated

Answer

To hold the standard solution

Answer

To indicate the titration's endpoint

Question 34

Which of the following is classified as a weak acid?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Sodium hydroxide

Question 35

In a titration, the equivalence point is reached when:

Accepted Answer

The moles of acid and base are equal.

Answer

The reaction reaches completion.

Answer

The pH of the solution is neutral (pH 7).

Answer

The indicator changes color.

Question 36

The primary function of a burette in a titration is to:

Accepted Answer

Deliver a precise and known volume of solution.

Answer

Measure the volume of the solution being titrated.

Answer

Mix the solutions together.

Answer

Indicate the equivalence point.

Question 37

Which of the following reactions is a redox titration?

Accepted Answer

Titration of potassium permanganate (KMnO₄) with oxalic acid (H₂C₂O₄)

Answer

Titration of silver nitrate (AgNO₃) with sodium chloride (NaCl)

Answer

Titration of ammonia (NH₃) with acetic acid (CH₃COOH)

Answer

Titration of sodium hydroxide (NaOH) with hydrochloric acid (HCl)

Question 38

In a redox titration, the oxidizing agent's role is to:

Accepted Answer

Gain electrons from the reducing agent.

Answer

Indicate the equivalence point.

Answer

Catalyze the reaction between the oxidizing and reducing agents.

Answer

Donate electrons to the reducing agent.

Question 39

Titration is used in healthcare for applications such as:

Accepted Answer

Determining the concentration of glucose in blood samples.

Answer

Analyzing the purity of water.

Answer

Testing the hardness of metals.

Answer

Measuring the pH of soil.

Question 40

The key difference between a monoprotic acid and a diprotic acid is:

Accepted Answer

Monoprotic acids donate one proton per molecule, while diprotic acids donate two protons per molecule.

Answer

Monoprotic acids are stronger than diprotic acids.

Answer

Monoprotic acids are always organic, while diprotic acids are inorganic.

Answer

Diprotic acids have a higher pH than monoprotic acids.

Question 41

The balanced chemical equation for the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) is:

Accepted Answer

NaOH + HCl → NaCl + H₂O

Answer

NaOH + HCl → NaClO + H₂

Answer

NaOH + HCl → Na₂O + H₂

Answer

2NaOH + HCl → NaCl₂ + 2H₂O