Concentration 3

5 g of the salt ammonium sulphate (NH₄)₂SO₄ are dissolved in 250 mL of water.
• State the complete reaction equation that describes this process. Indicate the respective aggregate states with the respective letters (s, l, g, aq).
• Calculate the molar concentration of ammonium ions c(NH₄₂⁺) in the solution.

Only red cells need to be completed. In the reaction equation stoichiometric coefficients of 1 also need to be stated explicitely (despite the fact that these are usually not written in a reaction equation).

Reaction equation: (NH₄)₂SO₄ (s) + H₂O (l) → NH₄⁺(aq) + SO₄^2-(aq)

	(NH₄)₂SO₄	H₂O	NH₄⁺	SO₄^2-
Molar mass (g/mol)
Amount of Substance (mol)
Volume (L)
Concentration (mol/L)
Mass (g)