CHEM 120L EXAM: 2025/2026, WITH
CORRECT/ACCURATE ANSWERS
An acid that is diprotic must have: - CORRECT ANSWERS- two
titratable acidic protons
In chemistry, a solution that has been standardized has: -
CORRECT ANSWERS- an accurately determined concentration
What is the definition of a titrant solution used in titrations? -
CORRECT ANSWERS- the liquid dispensed from the burette
The indicator phenolphthalein is a weak organic acid whose
unprotonated form is: - CORRECT ANSWERS- pink / red
eluent - CORRECT ANSWERS- the sample that is being loaded
onto the ion exchange column
Eluate - CORRECT ANSWERS- The solution that washes out (e.g.,
solutions that drip from a chromatography column).
equivalence point - CORRECT ANSWERS- occurs when the moles
of acid equal the moles of base in a solution
, end point of titration - CORRECT ANSWERS- the point at which
the indicator changes color
primary standard - CORRECT ANSWERS- a highly purified solid
compound used to check the concentration of the known solution
in a titration
stationary phase - CORRECT ANSWERS- a solid, gel, or
immobilized liquid
chromatographic bed - CORRECT ANSWERS- a column or sheet
used to support the stationary phase
mobile phase of chromatography - CORRECT ANSWERS- solvent
which carries samples through the stationary phase
delivery system - CORRECT ANSWERS- a force that moves the
sample through the stationary phase (gravity or pressure)
detector - CORRECT ANSWERS- way to identify or quantify
substances as they elute
Elute - CORRECT ANSWERS- leave the stationary phase
CORRECT/ACCURATE ANSWERS
An acid that is diprotic must have: - CORRECT ANSWERS- two
titratable acidic protons
In chemistry, a solution that has been standardized has: -
CORRECT ANSWERS- an accurately determined concentration
What is the definition of a titrant solution used in titrations? -
CORRECT ANSWERS- the liquid dispensed from the burette
The indicator phenolphthalein is a weak organic acid whose
unprotonated form is: - CORRECT ANSWERS- pink / red
eluent - CORRECT ANSWERS- the sample that is being loaded
onto the ion exchange column
Eluate - CORRECT ANSWERS- The solution that washes out (e.g.,
solutions that drip from a chromatography column).
equivalence point - CORRECT ANSWERS- occurs when the moles
of acid equal the moles of base in a solution
, end point of titration - CORRECT ANSWERS- the point at which
the indicator changes color
primary standard - CORRECT ANSWERS- a highly purified solid
compound used to check the concentration of the known solution
in a titration
stationary phase - CORRECT ANSWERS- a solid, gel, or
immobilized liquid
chromatographic bed - CORRECT ANSWERS- a column or sheet
used to support the stationary phase
mobile phase of chromatography - CORRECT ANSWERS- solvent
which carries samples through the stationary phase
delivery system - CORRECT ANSWERS- a force that moves the
sample through the stationary phase (gravity or pressure)
detector - CORRECT ANSWERS- way to identify or quantify
substances as they elute
Elute - CORRECT ANSWERS- leave the stationary phase
