Primary Standard Solutions (HSC SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a primary standard solution?
What is a primary standard solution?
A solution with accurately known conc.
In chemistry, what does accuracy refer to?
In chemistry, what does accuracy refer to?
The number of significant figures
Why should primary standards have a large molar mass?
Why should primary standards have a large molar mass?
To reduce percentage error when weighing
Why must primary standards be anhydrous?
Why must primary standards be anhydrous?
Water content varies with humidity
Which is the most frequently used primary standard for acid-base titrations?
Which is the most frequently used primary standard for acid-base titrations?
Anhydrous sodium carbonate ()
Why cannot be used as a primary standard?
Why cannot be used as a primary standard?
It's hygroscopic and reacts with
Why is unsuitable as a primary standard?
Why is unsuitable as a primary standard?
It contains water of hydration
Why must the beaker be rinsed three times when preparing a primary standard?
Why must the beaker be rinsed three times when preparing a primary standard?
To transfer all weighed solute to flask
Why must the meniscus be viewed at eye level?
Why must the meniscus be viewed at eye level?
To avoid parallax error
How many significant figures should the concentration be expressed to?
How many significant figures should the concentration be expressed to?
Four significant figures