Titrimetry

The purpose of a titration is to...

• determine the concentration of a titrand

• determine the concentration of a titrant

• determine the volume of a titrant

• determine the mass of an analyte

Answer explanation

Final letters matter!

At first, 'titre' meant...

• the concentration of a substance in a sample

• the proportion of noble metals in alloys

• the purity of alloyed metals

• the density of metals

How is Louis Gay-Lussac related to titration?

• He invented this method

• He developed the first burette

• He used to teach other chemists to titrate

• Sorry?

Answer explanation

The French chemist developed an improved version of the burette and invented the terms "pipette" and "burette" in 1824.

What is it?

• Volumetric pipette

• Gravimetry

• Aliquot

• Indication

Name the indicator.

• Litmus

• Phenolphthalein

• Cresol green

• Complex indicator

To neutralize 5 ml of HCl, we applied 7.3 ml of NaOH solution. The concentration of NaOH solution equals 0.1. Calculate the concentration of HCl using the law of equivalents.

• 0.15 mol/L

• 0.22 mol/L

• 0.34 mol/L

• 0.44 mol/L

Answer explanation

Easy peasy!

This equipment item is used to measure the volume of a titrant required for titration.

• Pipet bulb

• Fume hood

• Burette

• Litmus paper

The endpoint is a point in titration where we stop (a)  

Change in volume in titrimetry is...

• indication

• signal

• calculation

• solution

The point in a titration where the titrant and titrand have identical volumes is called...

• Endpoint

• Stoppoint

• Equivalent point

• Equivalence point