4.1 - Preparation of a Standard Solution of Sodium Carbonate (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
Why is sodium carbonate used as a primary standard?
Why is sodium carbonate used as a primary standard?
It is pure, stable, and water-soluble
What is the molar mass of sodium carbonate ()?
What is the molar mass of sodium carbonate ()?
106 g/mol
What mass of sodium carbonate is required to prepare 250 cm³ of 0.1 M solution?
What mass of sodium carbonate is required to prepare 250 cm³ of 0.1 M solution?
2.65 g
What size volumetric flask is used in this experiment?
What size volumetric flask is used in this experiment?
250 cm³
What volume of deionised water is initially added to the beaker?
What volume of deionised water is initially added to the beaker?
About 50 cm³
What is a safety hazard of sodium carbonate?
What is a safety hazard of sodium carbonate?
It is an irritant to eyes, skin, lungs
What accuracy must the balance have?
What accuracy must the balance have?
0.01 g
Why must the clock glass and stirring rod be rinsed during the experiment?
Why must the clock glass and stirring rod be rinsed during the experiment?
To ensure all is transferred
What is the final concentration of the sodium carbonate solution?
What is the final concentration of the sodium carbonate solution?
0.1 M
How should the final drops of water be added to the volumetric flask?
How should the final drops of water be added to the volumetric flask?
Dropwise using a dropping pipette
Why must the flask be inverted several times after filling?
Why must the flask be inverted several times after filling?
To ensure a homogeneous solution
What is a standard solution?
What is a standard solution?
Solution of accurately known concentration