deh l answers bta3et l as2ela 3la word ,... w da le l nas ely fat7a mob .. 1- Choose the correct Answers :- 1) Weak electrolytes 2) Base 3) Neutral 4) Less than 7 5) Neutralization 6) saturated 7) Reduction – half reaction ------------------------------------------------------------------------ 2- Put ( T ) for the true sentence and ( F ) for false one :- 1) F 2) F 3) F 4) T -------------------------------------------------------------------------------- 3- Definitions :- 1) Reagent : The substance of known composition by which the transformation occurs to complete chemical reaction. 2) Solution : solute dissolved in solvent . 3) Solvent : substance that exist in solution with large amount . 4) Solute : substance that exist in solution with small amount . 5) Conc. Solution : amount of solute > amount of solvent . 6) Dil. Solution : amount of solute < amount of solvent . 7) Saturated solution : Type of solutions where amount of solute equal amount of solvent and any excess amount of solute wont dissolve in solvent . Unsaturated solution : types of solutions Where amount of solute is smaller than solvent and any excess amount of solute will dissolve in solvent . 9) Super saturated solution : types of solutions Where amount of solute is larger than solvent and any excess amount is forced to dissolve in solvent . 10) Electrolyte : Solution that conduct electricity . 11) Non electrolyte : Solution that doesn’t conduct electricity . 12) Law of mass action : The rate of a chemical reaction is directly proportional to the product of molar concentrations of the reacting substances . 13) La chatelier : When a stress is applied to a system in equilibrium , the equilibrium will shift in such a manner as to relieve or neutralize the stress . 14) Qualitive analysis : the identification or detection of the components of certain substance , of mixture of substances or of solution . 15) Quantitive analysis : Used to determine percentage or amount of elements in compound , Also used to determine purity of sample . ---------------------------------------------------------------------------- 4- Complete :- 1- Quantitive analysis 2- Electrolytes 3- Acid base reaction ( neutralization reaction ) -------------------------------------------------------------------------------------- 5 ) - Log [ H ] = Ph Ph = 8 Type of solution >> Basic solution because Ph > 7
Posted on: Sat, 02 Nov 2013 16:28:16 +0000
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