Question

10 examples of chemical reactions without balancing

Answer 1

CO2 + 6 H2O → C6H12O6 + 6 O2 (balanced equation for photosynthesis)
6 carbon dioxide + 6 water yields 1 glucose + 6 oxygen

2 AgI + Na2S → Ag2S + 2 NaI
2 silver iodide + 1 sodium sulfide yields 1 silver sulfide + 2 sodium iodide

Ba3N2 + 6 H2O → 3 Ba(OH)2 + 2 NH3

3 CaCl2 + 2 Na3PO4 → Ca3(PO4)2 + 6 NaCl

4 FeS + 7 O2 → 2 Fe2O3 + 4 SO2

PCl5 + 4 H2O → H3PO4 + 5 HCl

2 As + 6 NaOH → 2 Na3AsO3 + 3 H2

3 Hg(OH)2 + 2 H3PO4 → Hg3(PO4)2 + 6 H2O

12 HClO4 + P4O10 → 4 H3PO4 + 6 Cl2O7

8 CO + 17 H2 → C8H18 + 8 H2O

10 KClO3 + 3 P4 → 3 P4O10 + 10 KCl

SnO2 + 2 H2 → Sn + 2 H2O

3 KOH + H3PO4 → K3PO4 + 3 H2O

2 KNO3 + H2CO3 → K2CO3 + 2 HNO3

Na3PO4 + 3 HCl → 3 NaCl + H3PO4

TiCl4 + 2 H2O → TiO2 + 4 HCl

C2H6O + 3 O2 → 2 CO2 + 3 H2O

2 Fe + 6 HC2H3O2 → 2 Fe(C2H3O2)3 + 3 H2

4 NH3 + 5 O2 → 4 NO + 6 H2O

B2Br6 + 6 HNO3 → 2 B(NO3)3 + 6 HBr

4 NH4OH + KAl(SO4)2·12H2O → Al(OH)3 + 2 (NH4)2SO4 + KOH + 12 H2O

Check Equations To Make Sure They Are Balanced

When you balance a chemical equation, it's always a good idea to check the final equation to make sure it works out. Perform the following check:

Add up the numbers of each type of atom. The total number of atoms in a balanced equation will be the same on both sides of the equation. The Law of Conservation of Massstates the mass is the same before and after a chemical reaction.

Make sure you accounted for all types of atoms. Elements present on one side of the equation need to be present on the other side of the equation.

Make sure you can't factor out the coefficients. For example, if you could divide all of the coefficients on both sides of the equation by 2, then you may have a balanced equation, but not the simplest balanced equation.

CITE 

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