DF - Formulae, equations and amount of substance *01 Flashcards

1
Q

Ideal Gas Equation

A

PV=nRT

Pressure = Pa (kPa --> Pa x10000
Volume = m3 (m3 --> cm3 x10^5)
n = moles 
R = gas constant (8.31JK-1mol-1)
Temperature = kelvin ( +273 )
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2
Q

Molar volume

A

all gases take up the same volume at RTP (298K, 100kPa)

this volume is 24dm^3

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3
Q

how do you work out the no. of moles of gas in a certain volume?

A

no. of moles = vol. (dm^3) / 24

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4
Q

how would you work out no. of molecules of gas?

A
  1. find the no. of moles (vol. in dm^3 / 24)

2. x no. of moles by avogadro’s constant (6.02 x 10^23)

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5
Q

Techniques and procedures to measure vol. of gases

A

use a gas syringe

  1. attach to opening of reaction vessel lets you measure how much gas is produced
  2. will show total vol. of gases
  3. can tell when a reaction has ended as no further change in gas vol.
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6
Q

PAG 1

A
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