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Acids & Bases
defs and concepts for lecture test
20
Chemistry
Undergraduate 1
02/25/2013

Additional Chemistry Flashcards

 


 

Cards

Term

What is an Arrhenius acid?

Arrhenius base?

Definition

acid:

dissociates to produce a H+ ion

 

base:

dissociates to produce a OH- ion

Term
T or F: Every Arrhenius acid or base can also be classified as a Bronsted-Lowry acid or base.
Definition

true

 

b/c even though Arrhenius has do with H+ & OH- both of these can still electrons (lewis acid/base)

Term
T or F: Every lewis  acid or base can also be classified as a Arrhenius  acid or base.
Definition

False for example:

BCl3, AlCl3

(these are Lewis acids(donate e- from the Cl), however they do not have H's to donate which is for Arrhenius defintion)

Term
T or F: Every Bronsted-Lowry  acid or base can also be classified as a Lewis  acid or base.
Definition

true

b/c even thoughBronsted-Lowry  has do with H+ & OH- both of these can still electrons (lewis acid/base)

Term

difference btwn :

Bronsted-Lowry & Arrhenius

  acid or base

Definition
Arrhenius:refer to behavior of an acid/base in an aqueous solution
Term
Buffers are usually made by what 2 components
Definition

weak monoprotic acid & salt of its conjugate base

 

or

weak base & conj acid

Term
when small amounts of base is added to a buffer ,what occurs?
Definition
the base reacts with H+ ions in the solution, causing more base to formed.
Term
when small amounts of acid is added to a buffer ,what occurs?
Definition
acid reacts with its conjugate base, causing more acid to be formed.
Term
Ksp is
Definition
solubility constant
Term
what does ksp is a fcn of (2)
Definition

structure of the salt

temp of solution

Term
What is the conc of OH- and H+ in pure water at equilibrium?, Is this always the case?
Definition

10-7

 

In other solutions this not the case, however their product must be 10-14

Term

amphoteric def

give 2 ex

Definition

substance that can act like a base or acid

 

water

amino acid

Term

what causes the kw(water dissciation constant) to change?

not to change?

Definition

temperature ONLY

 

changes that do not affect:

pressure

concentration

volume

 

Term
increased temp will cause the kw to increase or decrease?
Definition
increase
Term
pOH= 2
Definition

basic, 

 

pOH=↓ 7 is basic

Term
pOH= 13
Definition
acidic
Term
a weak base / acid has a k a/b value of?
Definition
less than 1.0
Term
for ka/b expression, is water included ?
Definition
no
Term

a strong  acid/ base  will have a ______ conj  acid/base

 

 

Definition
weak
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