Monitoring and controlling chemical reactions

Question 1

Theoretical yield formula

Answer 1

(mass of limiting reactant x sum of Mr for products)/ sum of Mr for limiting reactant

Question 2

Percentage yield formula

Answer 2

(Actual / theoretical) x 100

Question 3

Atom economy formula

Answer 3

sum Mr of desired / sum total Mr

Question 4

Factors determining reaction pathway

Answer 4

Yield
Atom economy
Rate of reaction
Usefulness of by products
Equilibrium position

Question 5

Concentration formula

Answer 5

Mass of solute/ volume in dm

Question 6

How do you carry out a titration experiment

Answer 6

Acid in burette, alkali in conical, add indicator, slowly add acid, swirl, repeat until indicated, repeat experiment, read titre

Question 7

Molar volume formula

Answer 7

volume in dm =mol x 24

Question 8

Rate of reaction formula

Answer 8

Amount of reactant used or product made / time

Question 9

What is dynamic equilibrium

Answer 9

Rates of forward and backward reaction are the same however reactions still happen, constant concentration

Question 10

What is equilibrium position

Answer 10

Ratio of equilibrium concentrations of reactants and products. Left if reactant concentration > product

Question 11

What affects equilibrium position