Analytical Chemistry Techniques Quiz

Which of the following is a common use of chromatography in analytical chemistry?

• Determining the boiling point of a substance

• Separating components of a mixture

• Measuring the density of a liquid

• Calculating the pH of a solution

In paper chromatography, what is the stationary phase typically made of?

• A liquid solvent

• A solid adsorbent

• A paper strip

• A gas

Which type of chromatography is most suitable for separating volatile compounds?

• Paper chromatography

• Gas chromatography

• Thin-layer chromatography

• Column chromatography

What is the purpose of a titration in analytical chemistry?

• To measure the temperature of a solution

• To determine the concentration of a solute in a solution

• To separate mixtures into individual components

• To identify the colour of a compound

In a titration, what is the solution of known concentration called?

• Analyte

• Solvent

• Titrant

• Indicator

Which indicator is commonly used in acid-base titrations?

• Methyl orange

• Phenolphthalein

• Bromothymol blue

• Litmus

What is the endpoint of a titration?

• The point at which the solution changes colour

• The point at which the solution reaches boiling point

• The point at which the solution becomes neutral

• The point at which the solution becomes saturated

In gas chromatography, what is the mobile phase?

• A liquid solvent

• A solid adsorbent

• A gas

• A paper strip

Which of the following is a disadvantage of paper chromatography?

• It is expensive

• It requires specialised equipment

• It has low resolution

• It is time-consuming

What is the role of an indicator in a titration?

• To act as a catalyst

• To change the pH of the solution

• To signal the endpoint of the titration

• To increase the solubility of the solute