ch8 worksheet answers

Chemical Equations Name: ________________ Pd___

List the 5 basic types of chemical reactions. Then classify each of the reactions below as one of these types

decomposition (d), synthesis(s), double displacement(dd), single displacement (sd), combustion (c)

Classify, Balance the following formula equations, be prepared to translate into word equations

1. 2Fe + 3H₂S0₄ = Fe₂(SO₄)₃ + 3H_{2. ....sd}

2. 2C₂H₆ + 7O₂ = 6 H₂O + 4CO_{2. ....c}

3. 3KOH + H₃PO₄ = K₃PO₄ + 3H₂O. ....dd

4. SnO₂+ 2H₂ = Sn + 2H₂O ....sd

5. 4NH₃ + 5O₂ = 4NO + 6H₂O. ....c

6. 2 KNO₃ + H₂CO₃ = K₂CO₃ + 2HNO_{3 ...dd}

Change the following word equations into formula equations, then balance & classify

7. Aluminum metal reacts with chlorine gas to make aluminum chloride solid

2Al(s) + 3Cl2(g) =>2 AlCl3(s) ...s

8. Water liquid with electricity forms hydrogen gas and oxygen gas.

2H2O(l) +elec=> 2H2(g) +02(g).....d

9. Zinc reacts with hydrochloric acid solution to produce hydrogen gas and zinc chloride solution.

Zn(s) + 2HCl(aq) => H2(g). +. ZnCl2(aq) ...sr

10. Lead II Nitrate solution reacts with sodium chloride solution to produce a lead II chloride precipitate and a sodium nitrate solution.

Pb(NO3)2 (aq). +. 2NaCl(aq) => PbCl2 (s) + 2NaNO3(aq) ....dd

11. Octane (C₈H₁₈) is burned in your car. First, complete the word equation. (hint: there must be another reactant, and you get the same products as when we burn methane in the Bunsen burners)

2C8H18(l). +. 25 O2(g). + spark => 16 CO2(g). + 18 H2O(g) ....c

12. Magnesium hydroxide solid is mixed with hydrochloric acid solution resulting in magnesium chloride solution and water.

Mg(OH)2 (s) +. HCl(aq). => MgCl2(aq). + H2O(l) ...dd

13. Ammonium chloride solid is formed when ammonia gas, hydrogen gas and chlorine gas react.

2NH3(g) + H2(g) + Cl2(g) => 2NH4Cl(s) ...s