Random midterm stuff

Question 1

6 strong acids

Answer 1

Hydrochloric acid (HCl)
Hydrobromic acid (HBr)
Hydriodic acid (HI)
Nitric acid (HNO3)
Sulfuric acid (H2SO4)
Perchloric acid (HClO4)

Question 2

what are the units of molarity

Answer 2

moles / litres

Question 3

What are the soluble cations?

Answer 3

group 1 ions and NH4+

Question 4

what are soluble anions ?

Answer 4

NO3- and CH3COO-
Cl-, Br-, and I-, except with Ag+, Cu+, Pb 2+, Hg2 2+
SO4 2- except with Pb 2+, Hg2 2+, Ca 2+, Ba 2+, Sr 2+

Question 5

which ions are not soluble with Cl-, Br-, and I- ? (4)

Answer 5

Ag+, Cu+, Pb 2+, Hg2 2+

Question 6

What are sulfates (SO4 2-) not soluble with? (5)

Answer 6

Ba2+, Sr 2+, Ca 2+, Hg2 2+ , Pb 2+

Question 7

What are the insoluble compounds?

Answer 7

All (OH) except with group 1, Ca 2+, Sr 2+ and Ba 2+
All sulfides (S 2-) except group 1a and NH4 +, Ca 2+, Sr 2+, Ba 2+
All carbonates (CO3 2-), except group 1 and NH4 +
All phosphates (PO4 3-) except group 1 and NH4 +

Question 8

Is OH a soluble compound

Answer 8

nope

Question 9

what is OH soluble with? (4)

Answer 9

group 1, Ca 2+, Sr 2+ and Ba 2+

Question 10

what is S 2- soluble with (5)

Answer 10

group 1a and NH4 +, Ca 2+, Sr 2+, Ba 2+

Question 11

What does a loss of electrons mean?

Answer 11

oxidation

Question 12

what does a gain of electrons mean?

Answer 12

reduction

Question 13

What is the oxidation number of a pure element?

Answer 13

0

Question 14

What is Fluorines oxidation number in all compounds ?

Answer 14

-1

Question 15

What are Br and Cl oxidation numbers? is there an exception?

Answer 15

-1, unless combined with O or F

Question 16

What is Amphiprotic?

Answer 16

can act as either an acid or a base

Question 17

what are the strong bases?

Answer 17

Group 1A and 2A hydroxides

Question 18

do strong acids/bases completely dissociate?

Answer 18

Yes