Acids
give 2 characteristics of an acid
sour, low pH
give 2 characteristics of a base
slippery, soapy, high pH
What does amphoteric mean?
can act as an acid or a base
what does a neutralization reaction produce?
acid + base --> salt + water
What volume of 0.500 M HNO3(aq) must completely react to neutralize 100.0 milliliters of 0.100 M KOH(aq)?
what does an acid donate?
H+
What does a base donate?
OH-
What pH range is a strong acid?
1-3
What color will methyl orange turn in a solution with a pH of 6?
yellow
Which volume of 0.10 M NaOH(aq) exactly neutralizes 15.0 milliliters of 0.20 M HNO3(aq)?
30
Identify the acid on the left side
NH3 (aq) + H2O (l) ↔ NH4+ (aq) + OH-(aq)
H2O
Identify the base on the left side
HBr(g) + H2O (l) ↔ H3O+(aq) + Br-(aq)
Br
How much greater is the hydronium ion concentration in a solution with a pH of 2 than a pH of 5?
1000x
If a solution turns pink in phenolthalien, is it an acid or a base?
base
A student neutralized 16.4 milliliters of HCl by adding 12.7 milliliters of 0.620 M KOH. What was the molarity of the HCl acid?
.48
Identify the acid on the right side
NH3 (aq) + H2O (l) ↔ NH4+ (aq) + OH-(aq)
NH4
Identify the base on the left side
HBr(g) + H2O (l) ↔ H3O+(aq) + Br-(aq)
H2O
Does a solution with a pH of 4 have more hydronium ions or hydroxide ions than a solution of 8? By how much?
10000x
If a solution turns blue in bromcresol green and blue in bromthymol yellow, what is the pH range?
5.4 -6
As the pH of a solution is changed from 3 to 6, the concentration of hydronium ions
A) increases by a factor of 3
B) increases by a factor of 1000
C) decreases by a factor of 3
D) decreases by a factor of 1000
d
Which of the following is an acid
a. KOH
b. HCl
c.KBr
B
Which of the following is a base?
a. KBr
b. CH3COOH
c. NH3
d. HNO2
NH3
[H+] > [OH-]
is this a basic or acidic solution?
acidic
If a solution turns red in litmus and yellow in methyl orange, what is the pH range?
4.4-4.5
Which pH change represents a hundredfold increase in the concentration of H3O+ ?
A) pH 5 to pH 7
B) pH 13 to pH 14
C) pH 3 to pH l
D) pH 4 to pH 3
c