Acids & Bases
Whose definition of acids and bases emphasizes the role of protons?
Bronsted-Lowry
Weak acid has a conjugate base that is a much stronger base than water.
True / False
True
Calculate the [H+] in a solution in which [OH-] = 2.0 x 10^-2 M. Is this solution acidic, basic or neutral?
5.0 x 10^-13 M
Basic
When Na reacts with HCl, the products of the reaction will be________ and ________
NaCl and H2
A gas that turns lime water milky
carbon dioxide
The limitation of Arrhenius concept is_______
It allows for only certain type of bases which is hydroxides
An example of Diprotic acids is H3PO4.
True / False?
False
Calculate the [H+] in a solution that shows a pH of 11.70.
2.0 x 10^ -12 M
When Au reacts with HNO3, the products of the reaction will be
No reaction
A gas that bleaches litmus paper
Chlorine gas
In the equation HCl(g) + H2O(l) --> H3O+(aq) + Cl–(aq), which species is a conjugate base?
Cl-
Acids taste______
Sour
Determine the volume of 0.100 M NaOH needed to titrate 20.0 mL of 0.400 M HCl.
80 mL
zinc carbonate + hydrochloric acid ==>
zinc chloride + water + carbon dioxide
When tested with aqueous sodium hydroxide it forms green precipitate that is insoluble in excess
Iron (II)
In the equation, HI + H2O à H3O+ + I–, HI is a strong acid and I– is a
weak base
A species that can react as either an acid or a base is a(n)_________
Amphoteric
A solution is prepared by dissolving 36.5 g HCl(g) in enough water to make 1.0 L of solution. The pH
of this solution is
0
Given the following neutralization equation: NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l). Which is the base?
NaOH
When tested with aqueous sodium hydroxide it forms white precipitate that is soluble in excess
Zinc ion
In the reaction represented by the equation
HClO3 + NH3 --> NH4+ + ClO3-
the conjugate acid of NH3 is_______
NH4+
To increase the rate of solubility of a large cube of sugar, what to do?
Grind it to increase the surface area for faster solubility
A solution has [H+] = 4.0 x 10-8M. The pOH of this solution is
6.60
Which statements about alkalis are correct?
1. When reacts with an acid the pH of the alkali increases
2. When tested with litmus paper, the litmus turns blue
3. When tested with methyl orange it turns yellow
2 and 3 only
When tested with nitric acid and aqueous silver nitrate, it forms cream precipitate
Bromide ions