chemical equations

word equations

100

zinc + lead (ll) nitrate yield zinc nitrate + lead

Zn + Pb (NO3)2 + Pb

200

aluminum bromide + chlorine yield aluminum chloride + bromine 

2Al Br3 + 3Cl2 - 2Al Cl3 + 3 Br2

300

sodium phosphate + calcium chloride yield calcium phosphate + sodium chloride

2 Na 3 PO 4 (ag) + 3 Ca 3 (PO4)2(5) + 6 Na Cl (ag)

400

copper + sulphuric acid yield copper (ll) sulphate + water + sulfur dioxide 

Cu + 2H 2 SO4 - CuSO4 + 2H20 + SO 2

500

 A piece of metallic zinc is placed in a blue solution of copper(II) sulphate. A reddish

brown layer of metallic copper forms in a clear solution of zinc sulphate.

zinc + copper (ll) sulphate - copper + zinc sulphate 

skeleton equations

100

A piece of metallic zinc is placed in a blue solution of copper(II) sulphate. A reddish

brown layer of metallic copper forms in a clear solution of zinc sulphate.

Zn+ CuSO4 - Cu \ ZnSO4

200

Hydrogen gas reacts with nitrogen trifluoride gas to form nitrogen gas and 

hydrogen fluoride

H2 + NF3 - N2 + HF

300

 Chromium(III) sulphate reacts with potassium carbonate to form chromium(III)

carbonate and potassium sulphate.

Cr2 (SO4)3 + K2CO3 - Cr2(CO3)3+ K2SO4

400

Iron combines with oxygen to form rust, which is also known as iron(II) 

oxide

Fe + O2 - FeO

500

aluminum chloride + sodium carbonate → aluminum carbonate + sodium chloride

Al Cl3 + Na2 CO3 - Al2 (O3)3+

balanced equations

100

Fe + Cl2 = FeCl3

2 Fe + 3 Cl2 = 2 FeCl3

200

KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2

2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2

300

K4Fe(CN)6 + KMnO4 + H2SO4 = KHSO4 + Fe2(SO4)3 + MnSO4 + HNO3 + CO2 + H2O

10 K4Fe(CN)6 + 122 KMnO4 + 299 H2SO4 = 162 KHSO4 + 5 Fe2(SO4)3 + 122 MnSO4 + 60 HNO3 + 60 CO2 + 188 H2O

400

calcium hydroxide + carbon dioxide = calcium carbonate + water

Ca(OH)2 + CO2 = CaCO3 + H2O

500

sulfur + ozone = sulfur dioxide

3 S + 2 O3 = 3 SO2

word or balanced

100

manganese (ll) carbonate(s) - manganese (ll) Oxides(s) + carbon dioxide(g)

Mg(CO3) - MgO + C O 2

200

K4Fe(CN)6 + H2SO4 + H2O = K2SO4 + FeSO4 + (NH4)2SO4 + CO

K4Fe(CN)6 + 6 H2SO4 + 6 H2O = 2 K2SO4 + FeSO4 + 3 (NH4)2SO4 + 6 CO

300

PhCH3 + KMnO4 + H2SO4 = PhCOOH + K2SO4 + MnSO4 + H2O

5 PhCH3 + 6 KMnO4 + 9 H2SO4 = 5 PhCOOH + 3 K2SO4 + 6 MnSO4 + 14 H2O

400

copper metal(s)  + chlorine(g) - copper (ll) chloride(s) 

Cu(s) + Cl 2 (g) - CuCl 2

500

Cr2O7{-2} + H{+} + {-} = Cr{+3} + H2O

Cr2O7{-2} + 14 H{+} + 6 e = 2 Cr{+3} + 7 H2O

mixture of all 3

100

Ca + P = Ca3P2

3 Ca + 2 P = Ca3P2

200

potassium metal(s) + water(I) - potassium hydroxide(aq) + hydrogen(g)

K(s) + H2O(L) - KOH(aq) + H(g)

300

potassium iodide + chlorine → potassium chloride + iodine

2 KI + Cl2 - KCl + I2

400

iron(III) oxide + hydrogen → water + iron

Fe2O3 + 3 H2 - 3 H2O + 2 Fe

500

S{-2} + I2 = I{-} + S

S{-2} + I2 = 2 I{-} + S