8 – Standardising a Sodium Hydroxide Solution (LC 2027) (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is standardisation?
What is standardisation?
Finding exact conc. by titration
What does deliquescent mean?
What does deliquescent mean?
Absorbs water & dissolves in it
Why can't NaOH be prepared to an exact concentration?
Why can't NaOH be prepared to an exact concentration?
It absorbs unknown amount of water
What is the molar ratio of HCl to NaOH in the neutralisation reaction?
What is the molar ratio of HCl to NaOH in the neutralisation reaction?
1:1
What solution does the burette contain during this standardisation?
What solution does the burette contain during this standardisation?
Standard HCl solution
Why is a white tile placed under the conical flask?
Why is a white tile placed under the conical flask?
To help see colour changes
What volume of NaOH solution is pipetted into the conical flask?
What volume of NaOH solution is pipetted into the conical flask?
What should the burette be rinsed with before filling?
What should the burette be rinsed with before filling?
Deionised water, then HCl solution
What colour change indicates the end point?
What colour change indicates the end point?
Yellow to red
Why does methyl orange turn red at the end point?
Why does methyl orange turn red at the end point?
Solution becomes acidic
What are concordant titration results?
What are concordant titration results?
Results agreeing within
Why is NaOH considered hazardous?
Why is NaOH considered hazardous?
It is caustic and causes severe burns
