Chemical Equation PDF

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Sample problems and equations for freshmens...

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Balancing Equations Balance the following chemical equations. (8 pts.)

1.

2 Na +____ I2 

2.

2 KClO3  2

2 NaI

KCl +

3 O2

3. ____ K3PO4 + 3 HCl 

3

KCl + ____ H3PO4

4. ____ C3H8 + 5 O2  3

CO2 + 4 H2O

Write and balance the following chemical equations.( 20 pts)

5. Nitrogen plus hydrogen produce ammonia. (Remember diatomic elements!) N2 + 3H2 → 2NH3

6. Sodium oxide combines with water to form sodium hydroxide. Na2O + H20 → 2NaOH

7. Sodium sulfate reacts with calcium nitrate to produce sodium nitrate and calcium sulfate. Na2SO4 + Ca (NO3)2 → 2NaNO3 + CaSO4

8. Zinc reacts with iron (III) chloride yielding zinc chloride plus iron. 3Zn+2FeCl3→ 3ZnCl2+2Fe

Balancing Equations – Ch. 8

CHEM

Balancing Equations – Practice Problems Balance the following chemical equations.(8 pts)

1.

2 N2 +____ O2 

2.

2 KI + ____ Cl2 

3.

2 C2H6 + 7

4.

3 Mg(NO3)2 +

2

N2O

2 KCl + ____ I2

O2  4

CO2 + 6 H2O

2 K3PO4  ____ Mg3(PO4)2 + 6

KNO3

Write and balance the following chemical equations.(20 pts)

5. Hydrogen plus oxygen produce water. (Remember diatomic elements!) 2H2 + O2 → 2H2O

6. Sodium reacts with magnesium chloride yielding sodium chloride plus magnesium. 2Na + MgCl2 → 2NaCl + Mg

7. Aluminum bromide plus chlorine yield aluminum chloride and bromine. 2AlBr3 + 3Cl2 → 2AlCl3 + 3Br2

8. Aluminum nitrate and sodium sulfide react to form aluminum sulfide and sodium nitrate. 2Al(NO3)3 + 3Na2S → Al2S3 + 6NaNO3

Balancing Equations – Practice Problems

CHEM...