Titrations 1

Question 1

Standard solution

Answer 1

Solution of accurately known conc.

Question 2

Primary standar solution

Answer 2

Solution of accurately known conc. that is prepared from a primary solution….

Question 3

Indicator for hcl and soduim carbonate

Answer 3

Methyl orange

yellow to pink

Question 4

Whats used to standarise hcl

Answer 4

Soduim carbonate

Question 5

Indicator for vinegar

Answer 5

Phenolphthalein

Pink to colourless

Question 6

Why vinegar diluted

Answer 6

If it wasn’t end point would occur too quickly for an accurate titration value to be recorded

Question 7

How vinegar diluted

Answer 7

Pipette (50cm3) vinegar into volumetric flask and make up to graduation mark with deionised water looong

Question 8

Standard solution procedure

Answer 8

Clock glass, balance
Beaker , washings
Dissolve , stirring rod
Funnel, washings
V. Flask , below
Bubbles
Dropper of d water , mark, eye level, bottomn of meniscus
Invert, no swirl

Question 9

Why can u use wash bottle for sides of conical flask during titration

Answer 9

It would dilute the solution
But
It doesn’t change no. Of moles in the reagent

Question 10

Prepairing apparatus

Answer 10

-

Question 11

%w/v

Answer 11

Divide original g/l by 10
Round to whole number
Eg. 5%w/v

Question 12

Primary standard

Answer 12

Substance that can be obtained in a pure , soluble, solid , stable state and can me weighed out & dissolved in h2o
Eg anhydrous sodium carbonate