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Chapter 4(chem)
n/a
36
Chemistry
Undergraduate 1
12/11/2013

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Term

The formula is CsBr so the equation for dissociation is: 

 
Definition

CsBr (s) → Cs+ (aq) + Br-(aq) 

Term

The total ionic equation shows

 
Definition

 all soluble ionic 

substances dissociated into ions. 

This gives the most accurate information about species in solution. 

 

 

Term

Spectator ions

 
Definition

 are ions that are not involved in the actual 

chemical change. Spectator ions appear unchanged on 

both sides of the total ionic equation. 

Term
The net ionic equation
Definition

eliminates the spectator ions and 

shows only the actual chemical change. 

 
Term
In a precipitation reaction
Definition

two soluble ionic compounds 

react to give an insoluble products, called a precipitate. 

 

• The precipitate forms through the net removal of ions 

from solution. 

 

• It is possible for more than one precipitate to form in 

such a reaction.

Term
An acid
Definition

is a substance that produces H+ ions when 

dissolved in H2O.

Term

A base 

 
Definition

is a substance that produces OH-

 ions when 

dissolved in H2O. 

Term
An acid-base reaction is also called a
Definition
neutralization reaction.
Term
Strong acids and strong bases dissociate
Definition
completely into ions in
aqueous solution.

They are strong electrolytes and conduct well in solution
Term
Weak acids and weak bases dissociate
Definition
very little into ions in aqueous
solution.
They are weak electrolytes and conduct poorly in solution.
Term
Bronsted-Lowry Acid is a species that

• Bronsted-Lowry Base is a species that
Definition
Bronsted-Lowry Acid is a species that donates a proton

• Bronsted-Lowry Base is a species that accepts a proton
Term
All Arrhenius Acids and Bases are also Bronsted-Lowry acids and bases,
Definition
but not all Bronsted-Lowry Acids and
Bases are Arrhenius acids and bases
Term
Oxidation is the
Definition
loss of electrons.
Increase in oxidation number
The reducing agent loses electrons and is oxidized.
Term
Reduction is the
Definition
gain of electrons.
decrease in oxidation number

The oxidizing agent gains electrons and is reduced.
Term
Properties of acids
Definition
-acid+metal=salt+H2(gas)
-acid+carbonate=salt+water+CO2
Term
properties of bases
Definition
-bitter
-slippery
-turn litmus paper blue
Term
Arrhenius definitions of acids and bases
Definition
acid:
-contains H+ ion

Base:
-contains OH- ion
Term
Amphiprotic
Definition
gain or donate H+ ion
ex:
H20 can loose an H+ and become OH-
and/or it can gain and H+ and become H3O+
Term
Polyprotic
Definition
can donate/gain more than one H+ ion

Ex: H2SO4->HSO4(-)->SO4(2-)
Term
Oxidation # of an element
Definition
0
Term
Oxidation # of a monatomic ion
Definition
equal to charge of ion
Term
Oxidation # of a Halogen
Definition
-1
Term
Oxidation# of Oxygen
Definition
-2 (peroxide O=-1)
Term
Oxidation# polyatomic idons
Definition
sum of oxidation #'s is equal to the charge of the polyatomic ion
Term
Oxidation# of a compound
Definition
sum of elements = 0
Term

oxidation reaction of :

Fe(s)+Cu(aq)

Definition
[image]
Term
Bronsted lowry acid and base
Definition

acid: donates H+ ion(proton)

base: accepts H+ ion (proton)

 

 

Term
Conjugate acid and base
Definition

what is formed after H+ is donated/accepted

 

[image]

Term
Bronsted lowry definition of acid and base
Definition
acid:donates H+ ion(proton)
base:accepts H+ ion(proton)
Term
pH scale
[H+]=10^-4
[OH-]=10^-6
Definition
[H+]=10^-4 pH=4
[OH-]=10^-6 pH=8
Term

balance redox equation

I(aq) + ClO → I2 (cr) + Cl(aq) + H2O (l) (basic)

Definition
[image]
Term
color change of permanganate:
Definition
MnO4-> Mn purple to colorless
Term
color change of dichromate
Definition
Cr2O7->Cr^-3 orange to green
Term
colorchange of IronIII
Definition
Fe^3+->Fe^2+ brown/black-> colorless
Term
oxidation______ top to bottom in a reactivity series
Definition
[image]
Term
Lewis acid and base
Definition
acid:
accepts electron pair
-compounds of group three elements

base:
-donates electron pair
-tend to be anions or have non bonding electron pair
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