Equations

Question 1

partial pressure

Answer 1

=mole fraction x total pressure

Question 2

mole fraction

Answer 2

= no. of moles of gas A

total no. of gaseous moles

Question 3

moles

Answer 3

=mass

Mr

Question 4

concentartion

Answer 4

= moles

volume

Question 5

pressure x volume

Answer 5

= 8.314 x moles x temperature

Question 6

volume

Answer 6

= moles x 24

Question 7

no. of particles

Answer 7

= moles X 6.02 X 10^23

Question 8

Heat Energy (Q)

Answer 8

=mass x water constant x change in temperature

Question 9

enthalpy

Answer 9

= heat energy (Q)

moles of reactant

Question 10

rate

Answer 10

rate constant k x [concentration of A]^order [concentrationB]^order

Question 11

rate constant

Answer 11

= ln2

half life

Question 12

Kc

Answer 12

=[concentration of products]^(no. of moles)

[concentration of reactants]^(no. of moles)

Question 13

Kp

Answer 13

=(Pressure of products)^moles

(Pressure of reactants)^moles

Question 14

Ka

Answer 14

=(cation)(H+)

(overall)

Question 15

cell potential

Answer 15

=positive electrode - negative electrode

Question 16

^G

Answer 16

=enthalpy change ΔHθ - T x change in entropy ΔSθ

Question 17

% uncertainty

Answer 17

uncertainty of measurement x100

measurement

Question 18

% atom economy

Answer 18

=mass of desired product (g) x100

total mass of reagents (g)

Question 19

% yield

Answer 19

=actual mass of products x100

total hypothetical mass

Question 20

Kp from Kc

Answer 20

Kc x (8.314 X temperature)^change in moles