Gas Laws pt 1 ( Yield+states+pressure+ideal gas law)

Question 1

Yield Calculation Formula

Answer 1

(Actual/theoretical)x100%

Question 2

Theorectical yield

Answer 2

How much product a reaction is expected to render

Question 3

Actual yield

Answer 3

How much a product a reaction actually renders

Question 4

Yield is too low, causes (3)

Answer 4

1. Rxn is slow
2. Rxn is at equilibrium
3. Flaws isolation method (e.g. filtering)

Question 5

Yield is too high, causes (3)

Answer 5

1. contaimination
2. excess reagent
3. Excess solvent

Question 6

States of matter: Solid (2)

Answer 6

• has fixed shape and volume
• does not take shape of container even as a powered

Question 7

States of matter: Liquid (4)

Answer 7

-Takes shape of container
- form horizontal surface
- has fixed volume
- less resistance then solid

Question 8

States of matter: gas (2)

Answer 8

-expands to fill container
- no fixed volume, it takes container

Question 9

Pressure (4)

what is it?
formula:
caused by?
measured by?

Answer 9

force per unit area
p=F/a

caused by collision of particles

measured by pascals

Question 10

What is cool about pressure for gasses? (2)

Answer 10

Gases exert equal pressure.

In a solid container, the pressure everywhere is equal

Question 11

how low Atmospheric pressure causes….

Answer 11

rainfall, storms..

bc moist warm air is less dense then cold air. It will rise and condense to rain.

Question 12

Amonton’s Law + description of what’s happening with the graph+formula (3)

Answer 12

Pressure is proportional to temp when moles and volume kept the same

as temp rises, pressure also increase in a fixed volume container

P1/T1=P2/T2

Question 13

Charles Law

Answer 13

Temp and volume are proportional when pressure and moles stay the same

Question 14

Gas law units in calculations: (2)

Answer 14

Pv=nRT
The p must be the same as the pressure unit in R constant

P1V1/T1=P2V2/T2
You can use any unit for P1 and P2 and any for V1 and V2. The unit for T1/T2 must be in absolute scale (kelvin)

Question 15

celcius to kelvin

Answer 15

+273.15

Question 16

Boyle’s Law
what happens when u increase pressure

(2)

Answer 16

Pressure is inversely proportional to volume as long as moles and temperature are constant

as you increase pressure, volume goes down

Question 17

R

Answer 17

ideal gas law constant

Question 18

ideal gas law (3)

Answer 18

defines state of ideal gas

PV=nRT

a single equation which relates the pressure, volume, temperature, and number of moles of an ideal gas

Question 19

Avagadros law

Answer 19

volume is proportional to moles as long as pressure and temp is the same.

Question 20

Static gas calculations (2)

Answer 20

A snapshot of a gas at one instant

There is one value for PVnT

Question 21

Changing gas calculations

Answer 21

overtime

one variable responds to he changing of another variable

Two of PVnT will change with the two other variables remain the same.