Phases

Question 1

Ideal Gas Law

Answer 1

PV=nRT R=8.314 J/K mol

Question 2

Simple Mercury Barometer

Answer 2

Patm=ρgh

1 atm = 760 torr = 760 mmHg

Question 3

Boyle’s Law

Answer 3

PV=constant

P and V inversely proportional at constant T

Question 4

Charles’ Law

Answer 4

V/T=constant

V and T are proportional at constant P

Question 5

Avogadro’s Law

Answer 5

V/n=constant

V and n are proportionals at constant T and P

Question 6

Isovolumetric

Answer 6

No change in volume = no work done

ΔE=q

Question 7

Adiabatic

Answer 7

No heat exchanged

ΔE=w

Question 8

Isothermal

Answer 8

No internal energy change

ΔE=0

Question 9

Standard molar volume

Answer 9

22.4 L

Question 10

Partial Pressure

Answer 10

P(a)=x(a) P(total) x(a)=mole fraction

Question 11

Dalton’s Law

Answer 11

P(total)=P(1) + P(2) + P(3) + …

Question 12

Partial Pressure Equilibrium Constant

Answer 12

K(p)= P(C)^c P(D)^d / P(A)^a P(B)^b

K(p)=K(c)(RT)^Δn

Question 13

Real Gases

Answer 13

Behave non-ideally w/ high P (above 10 atm) and low T (near boiling pt)

Question 14

Vand Der Waal’s Equation

Answer 14

Approximates real P and V

P + (n^2a/V^2)= nRT

Question 15

Heat Capacity

Answer 15

The added nrg needed to incfrease the tep of a given substance 1K or 1°C
c=q/ΔT

Question 16

Heat transfer

Answer 16

measured in calories
1 cal = 4.184 J
1 Cal = 1000 cal = 4184 J
q=cΔT

Question 17

Specific heat Capactiy

Answer 17

q=mcΔT in J/Kg K or cal/g °C

Question 18

Phase Changes

Answer 18

Melting, boiling, sublimating: endothermic (+ΔH), increase in entropy (+ΔS), increase volume and molecular motion

Freezing, condensation, deposition: exothermic (-ΔH), decrease in entropy (-ΔS), decrease volume and motion

Question 19

Critical Point

Answer 19

Molecule both gas and liquid

Question 20

Triple point:

Answer 20

Equilibrium between the phases

Question 21

Phase Diagram

Answer 21

\                     o
        \    L           / 
         \            /
          \      /
 S         o
         /            G
      /
   /