Chemical
Molecular
Formula
Empirical
Formula
What do we mean by Molar mass and
state its units?
Calculate the empirical formula of an acid with
2.04% hydrogen, 32.65% Sulfur and 65.31%
Oxygen by mass
Find the molar mass (Mr) of
ammonium sulphate
(NH4)2SO4
Calculate the mass of MgO that can be made from
heating 0.5 moles of MgCO3
MgCO3  MgO + CO2
Glucose
Methanioc Acid
HCOOH
Ethanoic Acid
CH3COOH
What is the equation that links moles,
mass and Mr (molar mass)?
Describe how to dilute solutions:
Name a strong acid:
Name a weak acid?
Define Relative Atomic Mass:
Indicator
What is the percentage of carbon in
ethane? (C2H6)
Colour
in acid
Which fully ionises?
Colour in
alkali
Describe 2 ways to measure the gas
produced in a chemical reaction:
Litmus
What is the equation that links
concentration, volume and moles? And
what are concentration units?
Phenolphthalein
Define Empirical Formula:
Calculate the mass of 0.5moles of MgO
UI
3
How do I dilute an acid of 1mol/dm to a
3
3
100cm solution of 0.1mol/dm ?
C5
3
Find the amount in moles of a 500cm
3
solution of concentration 0.1 mol/dm
What doe GDA mean?
What is meant by a
limiting reactant?
What does equilibrium mean?
How do we convert from the mass of sodium to the mass of Salt
(NaCl)?
What is the equation that links volume to
moles? What are the units of volume?
What does it mean if it lies to the right?
Sketch an alkali into acid titration curve
and identify:
23.8cm3 of 0.11 mol/dm3 hydrochloric acid reacts with 25cm3 of
sodium hydroxide. What is the concentration of the sodium
hydroxide solution?
Where it is alkali
End point of the reaction
Where it is acidic
Where it is neutral
State and explain conditions in the contact process?
2SO2 (g) + O2 (g)
If a system is in equilibrium, happens if we:

Increase temperature

Decrease temperature

Increase pressure

Remove products as they are formed
2SO3
(g)
How do we make a pure dry sample of insoluble salt?
Write the word and then ionic equation for the reaction f lead nitrate
and potassium iodide:
Explain why: A) Strong acids have a lower pH than weak acids of the same concentration
B) Strong acids have a faster rate of reaction than weak acids of same concentration
c) Strong hacids have a better electrical conductivity than weak acids of same concentration