Acids and Bases
What has a pH more than 7?
A base
What is the symbol for concentration?
M
HCl + NaOH creates what neutralization?
H2O + NaCl
What is a mol?
6.02*10^23 atoms/molecules
How many roles are at each table?
4
Bases taste…
Bitter
To find concentration, we divide moles or what other thing by liters?
Mass (g)
What is the pH of a solution with an H+ concentration of 1.0*10^-6? Is it acidic or basic?
6, acidic
What is the molar mass of O2?
32.00 g/mol
O--> 16.00 g/mol
O2---> 16.00*2=32.00 g/mol
How many students are in the class?
35 students
How much will a strong acid/base dissociate?
100%
What is the molarity of a solution that has 2 moles in 4 liters?
M=mol/L
=2 mol/4L
=0.5M
H2SO + 2NaOH creates what neutralization?
Na2SO + 2H2O
What is the molar mass of calcium carbonate (CaCO3)?
100.9 g/mol
Atomic Masses:
Ca = 40.08 g/mol ---> 40.08 + 12.01 + (3 x 16.00)
C = 12.01 g/mol = 100.9 g/mol
O = 16.00 g/mol ---->
How many juniors are in the class?
3 juniors
A substance has a pH of 7.13. Is it acidic, neutral, or basic?
Basic (slightly)
What solution is most concentrated? A: 0.80 mol NaOH in 2.00L H20; B: 0.80 mol NaOH in 1.00L H20; C: 0.80 mol NaOH in 0.50L H20
C: 0.80 mol NaOH in in 0.50L H2O
2HCl + Ca(OH)2 creates what neutralization?
CaCl2 + 2H2O
What is the molar mass of glucose (C6H12O6).
Answer: 180.18 g/mol
Atomic Masses:
C = 12.01 g/mol (mult. by 6) --> 72.06 g/mol
H = 1.01 g/mol (mult. by 12) --> 12.12 g/mol
O = 16.00 g/mol (mult. by 6) --> 96 g/mol
How many students' names start with an A?
7 students
What is the pH of bleach? A. 8 B. 10.8 C. 13 D. 12.9
C. 13
How many moles of KoH are present in 150.0 mL of a 0.80 M KOH solution?
0.120 mol
Given: moles = M x V
M = 0.80 M ---> 0.80 x 0.150 = 0.120 mol
V = 150.0 mL = 0.150 L
Which of the following is an example of a neutralization reaction?
A: 2Al(s) + 3H2O4(aq) →Al2(SO4)3(aq) + 3H2(g)
B: 2LiBr(aq) + Cl2(g) →2LiCl(aq) + Br2(l)
C: 2SO2(g) + 2H2O(l) + O2(g) → 2H2SO4(aq)
D: KOH(aq) + HNO3(aq) → KNO3(aq) + H2O(l)
D
How many grams of NaOH are in 0.75 moles?
Atomic Masses:
Na = 22.99 ---> 22.99 + 16.00 + 1.01 = 40.00 g/mol
O = 16.00
H=1.01
How tall is Miss Cassidy?
5'2"