Chemical Calculations (Part 2) Flashcards
1
Q
Finding the volume of a gas (25 degrees & 1 atm)
A
Volume in cm3
- moles = volume /24500
Volume in dm3
moles= volume / 24.5
2
Q
Ideal Gas Equation
A
- used when not in usual conditions
- PV=nRT
3
Q
Ideal Gas Equation units
A
Pressure = Pa
Volume = m3
Temperature = k
4
Q
Finding the volume of gas (0 degrees and 1atm)
A
moles= volume / 22400cm
5
Q
Change in conditions gas equation
A
p1v1 = p2v2
——- ——
T1 T2
6
Q
Working out the concentration of a solution
A
- moles = conc x volume ( Cm3)
—————————
1000- moles = conc x volume (dm3)
7
Q
Percentage yield =
A
actual yield /theoretical yield
x 100
8
Q
Atom Economy
A
Mr of required /
Total Mr of all products
x100
