Chem 11

An example of redox and metathesis reactions

CuO + H2 —> Cu + H20 redox

AgNo3 + NaI —> AgI + NaNO3 (metathesis

When will reactions proceed to completion

Whenever one of the products is physically removed from the reaction medium. When a gas or solid is formed

Define precent yield in general terms

Percent yield = (actual yield / theoretical yield) (100%)

Name six methods of seperating materials

Decantation, sublimination, extraction, flitration, distillation, sedimentation

Give criteria in terms of temperature changes for exothermic and endothermic reactions

Exothermic is an increase

Endothermic is decrease

What two liquids are flammable in this experiment

Acetone and methyl aclcohol

Define the term limiting agent

the reactant in a chemical reaction that runs out first and thus limits the amount of product that can be formed

What is the maximum percent yield in any reactions

The maximum precent yield in any reaction is 100%. This occurs when the actual and theoretical yields are the same

When Cu(OH)_2 (s) is heated, copper (II) oxide and water are formed.

Cu(OH)2(s) —> CuO(s) + H2O (liquid)

When sulfuric acid and copper (II) oxide are allowed to react, copper (II) sulfate and water are formed

H2SO4 (aq) + CuO (s) —> CuSO4 (aq) + H2O (L)