Chem Flashcards
Redox in terms of oxygen
Oxidation: gains oxygen
Reduction:loses oxygen
Redox in terms of transfer of electrons
Oxidation:loses electrons
Reduction: gains electrons
Redox in terms of change in oxidation number
Oxidation: increase in O.N
Reduction: decrease in O.N
Examples of NOT redox reaction
Reactions betwen metal carbonate/hydrogencarbonate
Neutralization
Precipation
What is an oxidizing agent
undergoes reduction
What is an reducing agent
undergoes oxidation
Trend of strength of oxidation power in halogens and halide ions
Becomes stronger up the column
Electrolyte
A substance that consists of mobile ions when melted or dissolves in water
Function of a salt bridge
Allows ions to move from one half cell to the other
Complettes circuit by allowing ions to move from one half cell into another
Provides ion to balance charges in solutions of the two half cells
Function of a porus device
Prevents direct mixing of the two electrolytes
Completes circuit by allowing ions to move from one electrolyte to another
Products with chlorine gas passed through cold dilute sodium hydroxide
Sodium chloride NaCl and sodium hydrochloride NaOCl
Products of chlorine gas passed through hot concentrated sodium hydroxide solution
Sodium chloride NaCl and Sodium chlorine NaClo3
What is a metal couple
A metal couple is a combination of two different metals connected to an
external circuit
