Further analysis and quantitative chemistry Flashcards
What colour will a flame test of Lithium compounds show?
A crimson flame.
What colour will a flame test of Sodium compounds show?
A yellow flame.
What colour will a flame test of Potassium compounds show?
A lilac flame.
What colour will a flame test of Calcium compounds show?
A red flame.
What colour will a flame test of Barium compounds show?
A green flame.
Which elements form white precipitates with sodium hydroxide?
Aluminium, Calcium and Magnesium.
Which elements precipitate dissolves in excess sodium hydroxide solution?
Aluminium.
Which ions form coloured precipitates with sodium hydroxide?
Copper(II), Iron(II) and Iron(III).
What colour precipitate does Copper(II) form with sodium hydroxide solution?
A blue precipitate.
What colour precipitate does Iron(II) form with sodium hydroxide solution?
A green precipitate.
What colour precipitate does Iron(III) form with sodium hydroxide solution?
A brown precipitate.
What reacts with dilute acids to form Carbon Dioxide?
Carbonates.
What does carbon dioxide produce a white precipitate with?
Limewater. This makes the limewater cloudy.
What type of ions produce precipitates with silver nitrate solution in the presence of dilute nitric acid?
Halide ions.
What colour precipitate does chloride make with silver nitrate in the presence of dilute nitric acid?
White.
What colour precipitate does bromide make with silver nitrate in the presence of dilute nitric acid?
Cream.
What colour precipitate does iodide make with silver nitrate in the presence of dilute nitric acid?
Yellow.
What must be added to sulphate ions to produce a white precipitate?
Barium Chloride in the presence of dilute hydrochloric acid.
What can be measured by titration using a suitable indicator?
The volumes of acid and alkali solutions that react with each other.
What can be found when you know the concentration of one of the reactants in a titration?
The concentration of the other reactant.
