Accuracy and Precision in Volumetric Analysis (Leaving Cert Chemistry): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does accuracy refer to in volumetric analysis?
What does accuracy refer to in volumetric analysis?
Closeness to the true value
What does precision refer to in volumetric analysis?
What does precision refer to in volumetric analysis?
How close repeated measurements are
In the bullseye analogy, what do shots near the centre and grouped together represent?
In the bullseye analogy, what do shots near the centre and grouped together represent?
High accuracy, high precision
What do grouped shots away from the bullseye centre represent?
What do grouped shots away from the bullseye centre represent?
Low accuracy, high precision
Why is accuracy important in volumetric analysis?
Why is accuracy important in volumetric analysis?
Ensures correct concentration values
Why is precision important in volumetric analysis?
Why is precision important in volumetric analysis?
Indicates reliability of technique
Why should readings be taken at eye level in volumetric analysis?
Why should readings be taken at eye level in volumetric analysis?
To prevent parallax errors
How should burettes and pipettes be rinsed before use?
How should burettes and pipettes be rinsed before use?
With the solution they will contain
How should solution be added near the endpoint of a titration?
How should solution be added near the endpoint of a titration?
Drop-by-drop
Which typically causes accuracy errors?
Which typically causes accuracy errors?
Incorrectly calibrated equipment
Which typically causes precision errors?
Which typically causes precision errors?
Inconsistent technique
A student records 23.5, 23.6, 23.7 (true value: 23.0 ). What does this show?
A student records 23.5, 23.6, 23.7 (true value: 23.0 ). What does this show?
Good precision, poor accuracy