Volumetric Analysis

Question 1

what is the formula for number of moles

Answer 1

n=mass/molar mass

Question 2

what is the formula for concetration?

Answer 2

c=n/v

Question 3

what is titrations?

Answer 3

the technique to enact the process used to combine unknown and known solutions of chemicals

Question 4

do Reactions occur in specific ratios?

Answer 4

yes. stoichiometric ratio

Question 5

what is a standard solution?

Answer 5

the solution we prepare of the compound with an unknown concertation.

Question 6

what is special about a volumetric flask?

Answer 6

extremely accurate

Question 7

what is a primary solution?

Answer 7

very pure chemical that is weighed and dissolved in a solvent, in the volumetric flask

Question 8

what is a neutralization reaction?

Answer 8

a chemical reaction in which acid and a base react quantitatively with each other

Question 9

what does titre mean?

Answer 9

the volume of standard soliton dispensed from a burette.

Question 10

what does aliquot mean?

Answer 10

a fixed volume of liquid measured by pipette

Question 11

what does titrand mean?

Answer 11

a solution whose concentration is determine by titration

Question 12

what does analyte mean?

Answer 12

a solution of unknown concentration

Question 13

what does stopcock mean?

Answer 13

the tap attached to a burette

Question 14

what does concordant titres mean?

Answer 14

volume of standard solution dispensed from a burette that differ by only 0.1ml from highest and the lowest

Question 15

what does burette mean?

Answer 15

a graduated glass cylinder that dispenses a highly accurate volume of a standard solution

Question 16

what does pipette mean?

Answer 16

a glass tube that dispenses a highly accurate amount of a solution of unknown concertation

Question 17

what does titrant mean?

Answer 17

the standard solution in a burette that is added to a solution of unknown solution

Question 18

What’s the difference between end point and equivalence point?

Answer 18

the equivalence point of titration is reached when chemicals have reached according to the molar ration with no reactant in excess.

the end point is when the indicator changes colour
it is important that the indicator changes colour as close as possible to the equivalence point.

Question 19

what is the purpose of the titration curve?

Answer 19

A titration curve is a graph of the pH as a function of the amount of titrant (acid or base) added.