Anion and Canion

Formula for frequency of how a photon of light appears on the emission line spectrum

E2 - E1 = hf, where h is Planck’s constant, f is frequency, E2 is higher energy level, and E1 is lower energy level

What colour does Sodium salt emit on a flame test?

Bright Orange

What colour does Potassium salt emit on a flame test?

Lilac

What colour does Copper salt emit on a flame test?

Green

What colour does Lithium salt emit on a flame test?

Crimson

What colour does Barium salt emit on a flame test?

Yellow

What colour does Strontium salt emit on a flame test?

Red

What do you add a few drops of to Chlorine in a Chlorine Anion Test?

AgNO3

What is the chemical equation for a Chlorine Anion Test?

Ag + and Cl - = AgCl precipitates

What do you add to Sulphate or Sulphite in an anion test to form a white precipitate?

BaCl2

In a Sulphate/Sulphite anion test, when you have your precipitate, what happens when you add HCl to it?

If it dissolves, it’s sulphite. If it remains, it’s sulphate

What are the two equations for the sulphate and sulphite anion tests?

Ba(2+) and SO4(2-) = BaSO4 Precipitate

Ba(2+) and SO3(2-) = BaSO3 Precipitate

In a Carbonate/Hydrogencarbonate test, what chemical do you add to produce what gas?

Dilute HCl to produce CO2

In a Carbonate/Hydrogencarbonate test, what chemical do you add to distinguish them, and what effect occurs that distinguishes them?

Add MgSO4. If a white precipitate forms, it’s Carbonate. Else, it’s Hydrogencarbonate

Write the chemical formulas for a Carbonate/Hydrogencarbonate test

Mg(2+) + CO3(2-) = MgCO3 Precipitate

Mg(2+) + 2HCO3(-) = Mg(HCO3)2

In a brown don’t test, what do you add to nitrate for form the brown ring?

FeSO4 and Sulphuric Acid

For a Phosphate test, what do you add to the solution?

Ammonium Molybdate and concentrated Nitric Acid, before the solution is heated, creating a yellow precipitate