# Write down the equations of ion exchange reactions (molecular, full and abbreviated ionic)

Write down the equations of ion exchange reactions (molecular, full and abbreviated ionic): a) barium chloride and sulfuric acid b) hydrochloric acid and sodium hydroxide c) potassium carbonate and hydrochloric acid d) nitric acid and calcium hydroxide

A).

As a result of the reaction between barium chloride and sulfuric acid, a precipitate is formed – barium sulfate, hydrochloric acid is formed.

BaCl+ H2SO= BaSO4↓ + 2HCl.

Ba2+ + 2 Cl1- + 2H1+ + SO42- = BaSO4↓ + 2H1+ + 2 Cl1-.

Ba2+ +  SO42- = BaSO4↓.

B). The reaction between sodium hydroxide and hydrochloric acid is a neutralization reaction: salt (sodium chloride) and water are formed.

NaOH + HCl = NaCl + H2O.

Na1+ + OH1- + H1+ + Cl1- = Na1+ + Cl1- + H2O.

H1+ + OH1-  = H2O.

V). The product of the reaction between potassium carbonate and hydrochloric acid is potassium chloride, carbon dioxide and water.

K2CO3 + 2HCl = 2KCl + CO2↑ + H2O.

2K1+ + CO32-+ 2H1+ + 2Cl1+ = 2K1+ + 2 Cl1- + CO2↑ + H2O.

2 H1+ + CO32- = CO2↑ + H2O.

G). The reaction between calcium hydroxide and nitric acid produces calcium nitrate and water.

Ca(OH)2 + 2HNO3 = Ca(NO3) + 2H2O.

Ca2+ + 2 OH1- + 2H1+ + 2 NO31- = Ca2+ + 2 NO31-  + 2H2O.

2H1+  + 2 OH1- = 2H2O.

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