Chemistry - Salts

Question 1

What are the soluble salts?

Answer 1

All sodium, potassium, ammonium salts, and nitrates. All chlorides, bromides and iodides except lead and silver. All sulfates except lead, barium and calcium.

Question 2

What are the insoluble salts?

Answer 2

All carbonates and hydroxides except sodium, potassium and ammonium.

Question 3

What is method 1 to prepare salts soluble in water?

Answer 3

For water-soluble salts, excluding sodium, potassium and ammonium. Fill half a beaker with solvent and keep adding excess solute (to avoid contamination of solvent in salt) until the reaction is over. Filter out the excess solute. Crystallize the filtrate to obtain the final product.

Question 4

What is the method used for two soluble reactants?

Answer 4

Titration.
Acid + alkali → salt + water
Acid + soluble carbonate (SPA) → soluble salt + water + carbon dioxide

Question 5

What is the method used to prepare an insoluble solid?

Answer 5

Precipitation. solution AB + aq. solution XY → ins. salt AY + aq. solution XB. Allows the ions to exchange with each other. Determine the precipitate based on which is an insoluble (salt) solid.

Question 6

What are the rules for writing ionic equations?

Answer 6

• For soluble salt equations, acid and alkali solutions, break up the species into its ions
• If the salt is insoluble in the solid state, do not split it into its ions
• For solids, liquids, and gases, leave it as it is
• Cancel out the common terms on both sides