things to memorize for chapter 4

Question 1

Name all strong acids

Answer 1

HCl 
HBr
HI
HNO3
H2SO4
HClO4

Question 2

Name all strong bases

Answer 2

Group IA 
Ca
Sr
Ba
LiOH
NaOH
KOH
RbOH 
CsOH
FrOH
Ca(OH)2
Sr(OH)2
Ba(OH)2

Question 3

Precipitation rules 1&2

Answer 3

1) Most Nitrate (NO3-) salts are soluble

2) Most salts containing Alkalai Metal ions and ammonium are soluble (Li+, Na+, K+, Cs+, Rb+, NH4+)

Question 4

Precipitation rule 3

Answer 4

3) Chloride, Bromide & Iodide salts are soluble. EXCEPT salts with Ag+, Pb 2+ & Hg2 2+

Question 5

Precipitation rule 4

Answer 5

4) Sulfate salts are soluble. EXCEPT BaSO4, PbSO4, Hg2SO4 & CaSO4

Question 6

Precipitation rule 5

Answer 6

5) Hydroxide salts precipitate. EXCEPT alkali and ammonium hydroxides, Ba(OH)2, Sr(OH)2 & Ca(OH)2 (which are soluble)

Question 7

Precipitation rule 6

Answer 7

6) Sulfide (S 2-), Carbonate (CO3 2-), Chromate (CrO4 2-)

& phosphates (PO4 3-) precipitate

Question 8

Oxidation state of Halogens

Answer 8

-1

Question 9

Oxidation state of Oxygen

Answer 9

-2

Question 10

Oxidation state of Peroxide

Answer 10

-1

Question 11

Oxidation state of monoatomic elements

Answer 11

State of 0 or the charge they have shown

Question 12

Oxidation state of Hydrogen

Answer 12

+1