Physical Chemistry Practicals (AQA A-Level Chemistry): Flashcards
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Practise the cards
10 cards from this deck
Volumetric solution definition
Volumetric solution definition
Solution of known concentration
Purpose of volumetric flask
Purpose of volumetric flask
To make up solution to a specified volume accurately
Balance type for weighing solid
Balance type for weighing solid
2 decimal place (2 dp) balance
Safety equipment for this practical
Safety equipment for this practical
Safety goggles and lab coat
Method to find exact mass of solid
Method to find exact mass of solid
Weighing by difference
Meniscus position at 250 mark
Meniscus position at 250 mark
Bottom of meniscus touches mark
Final step after filling flask to mark
Final step after filling flask to mark
Stopper and invert flask multiple times
Volume of water to dissolve solid
Volume of water to dissolve solid
Approx. 100
Typical systematic error from balance
Typical systematic error from balance
g (consistent)
Problem with old anhydrous reagents
Problem with old anhydrous reagents
Absorb moisture, causing inaccurate mass