4.2 - Standardisation of a Hydrochloric Acid Solution (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What is sodium carbonate classified as in this experiment?
What is sodium carbonate classified as in this experiment?
A primary standard
Which indicator is used in this titration?
Which indicator is used in this titration?
Methyl orange
What color change indicates the endpoint?
What color change indicates the endpoint?
Yellow to peach/pink
What is the mole ratio of to in the reaction?
What is the mole ratio of to in the reaction?
2:1
What is the concentration of the sodium carbonate solution?
What is the concentration of the sodium carbonate solution?
0.1 M
What volume of sodium carbonate is pipetted into the conical flask?
What volume of sodium carbonate is pipetted into the conical flask?
cm³
How many drops of methyl orange indicator should be added?
How many drops of methyl orange indicator should be added?
2-3 drops
In what increments is acid added during the rough titration?
In what increments is acid added during the rough titration?
cm³ increments
How close must two accurate titre readings be to each other?
How close must two accurate titre readings be to each other?
Within cm³
What hazard property does hydrochloric acid have?
What hazard property does hydrochloric acid have?
Highly corrosive
Why is methyl orange considered hazardous?
Why is methyl orange considered hazardous?
It contains ethanol and is flammable
Why rinse the burette with before use?
Why rinse the burette with before use?
To remove water that could dilute acid
Why is the funnel removed after filling the burette?
Why is the funnel removed after filling the burette?
To prevent drops altering the volume
Why use a conical flask instead of a beaker?
Why use a conical flask instead of a beaker?
Allows easy swirling & thorough mixing
Why is not used as a primary standard?
Why is not used as a primary standard?
It is not pure enough