# Quantitative Chemistry

HideShow resource information
• Created by: lh1002
• Created on: 28-05-16 17:23
What are the 2 different units that can be used for concentration?
mol/dm³ or g/dm³
1 of 18
What are the symbols for relative formula mass (RFM) and relative atomic mass (RAM)?
RFM= Mr, RAM= Ar
2 of 18
What is the equation for percentage yield?
actual yield/theoretical yield x 100%
3 of 18
What is the equation for atom economy?
4 of 18
What is atom economy?
The atom economy is a measure of the amount of starting materials that end up as useful products. It is important for sustainable development and for economic reasons to use reactions with high atom economy.
5 of 18
What is theoretical yield?
The mass you produce
6 of 18
What is titration?
A method of finding an unknown concentration with a solution with a known concentration
7 of 18
What is the equation for moles?
Moles= mass/Mr
8 of 18
To convert cm³ to dm³ what do you do?
/1000
9 of 18
What is a limiting reagent/reactant?
The reactant which runs out
10 of 18
What are the units for volume?
dm³ or cm³
11 of 18
What are the two equations for finding concentration?
Mass/volume, moles/volume
12 of 18
What is the equation for finding the volume of a gas at rtp?
volume of gas at rtp = number of moles × 24
13 of 18
What is the equation for finding the volume of a gas at stp?
volume of gas at stp = number of moles × 22.4
14 of 18
One mole of atoms contains 6 x 10²³ atoms, no matter what element it is
15 of 18
What does the law of conservation of mass state?
No atoms are lost or made during a chemical reaction so the mass of the products equals the mass of the reactants.
16 of 18
What are some reasons to why it is not always possible to obtain the calculated amount of a product?
The reaction may not go to completion because it is reversible; some of the product may be lost when it is separated from the reaction mixture; some of the reactants may react in ways different to the expected reaction.
17 of 18
What is percentage yield also known as?
Percentage mass
18 of 18

## Other cards in this set

### Card 2

#### Front

What are the symbols for relative formula mass (RFM) and relative atomic mass (RAM)?

RFM= Mr, RAM= Ar

### Card 3

#### Front

What is the equation for percentage yield?

### Card 4

#### Front

What is the equation for atom economy?

### Card 5

#### Front

What is atom economy?