Titrationa Flashcards
How do u make a standard solution?
You dissolve a known amount of a solid in a known amount of water to create a known concentration
What can standard solutions also be known as ?
Volumetric solutions
When making a standard solution what do we weigh the solid in ?
A weighing boat
What do u do after you weigh the solid in the boat ?
Tip it into the beaker
What do u do after you have tipped the solid into the beaker ?
Re-weigh the boat and subtract the mass of the boat from the mass of the boat and solid today her to find the precise mass of solid used
Once you’ve added distilled water to the beaker and stirred until sodium hydroxide has dissolved what do u do ?
Tip the solution into a volumetric flask. And use a funnel to make sure all of it goes in.
Then what do I do to make sure no solute is in the beaker ?
Rinse the beaker and stirring rod with distilled water and add this to the flask too.
When filling a volumetric flash to the correct volume what do u measure from ?
The bottom of the meniscus
Once the correct volume is made up in a standard solution what do u do before its finished ?
Put the stopper on and turn upside down a few times to make sure it’s mixed
What do titration a do ?
They let u work out the concentration of an acid or alkali
What do u use at the beginning of a titration to measure a set volume of the solution u want to know the concentration of ?
A pipette
What do u need to add to the solution u need to know the concentration of ?
An appropriate indicator
What do u full the burette with ?
A standard solution of the acid.
What do u need to use to poor the acid into the burette ?
A funnel
When pouring the acid into the burette what do u need to remeber for safety ?
Do it below eye level and wear safety glasses
