Download Na2SO4 + CaCl2 → CaSO4 + 2 NaCl 2 KI + Cl2 → 2 KCl + I2

GENERAL CHEMISTRY
UNIT 6: IN CLASS PRACTICE: WRITING CHEMICAL EQUATIONS
Name:________KEY_______________
Write the formula equations for the following, and then balance them.
1. sodium sulfate reacts with calcium chloride to produce calcium sulfate and sodium chloride
Na2SO4 + CaCl2  CaSO4 + 2 NaCl
2. potassium iodide reacts with chlorine gas to produce potassium chloride and iodine
2 KI + Cl2  2 KCl + I2
3. iron (II) sulfate reacts with ammonium sulfide to produce iron (II) sulfide and ammonium sulfate
FeSO4 + (NH4)2  FeS + (NH4)2SO4
Already Balanced
4. nickel (II) chlorate breaks down to form nickel chloride and oxygen gas
Ni(ClO3)2  NiCl2 + 3 O2
5. carbon tetrahydride (aka methane) reacts with oxygen gas to form carbon dioxide and dihydrogen monoxide (aka
water)
CH4 + 2 O2  CO2 + 2 H2O