Exam 2

Question 0

Bonding Rule

Answer 0

To achieve a noble gas configuration

Question 1

What are the Metalloids ?

Answer 1

Buy.      B. 
Several. Si
GArfield. Ge As
STories. Sb Te 
PAl.        Po At

Question 2

Cations

Answer 2

Atoms or group of atoms lose one or more electrons

Question 3

Anions

Answer 3

Atom or group of atoms gain one or more electrons

Question 4

Rules for predicting bonding types

Answer 4

1. Ionic compounds tend to form from atoms at thee dis of the periodic chart eg. Groups 1 and 2 with groups 6 and 7
2. Groups 1 and 2 always from ionic compounds.
3. Groups 6 and 7 sometimes form ionic compounds and sometimes form covalent compounds. They tend to form covalent compounds with atoms from their own group. Eg. SO2 and BrCl3 are covalent. But CaO and KBr are ionic

Question 5

NH4 [+]

Answer 5

Ammonium

Question 6

H3O [+]

Answer 6

Hydronium

Question 7

F[-]

Answer 7

Fluoride

Question 8

Cl [-]

Answer 8

Chloride

Question 9

Br [-]

Answer 9

Bromide

Question 10

I [-]

Answer 10

Iodide

Question 11

OH [-]

Answer 11

Hydroxide

Question 12

O [2-]

Answer 12

Oxide

Question 13

O2 [2-]

Answer 13

Peroxide

Question 14

O2 [-]

Answer 14

Superoxide

Question 15

CO3 [2-]

Answer 15

Carbonate

Question 16

HCO3 [-]

Answer 16

Hydrogen carbonate of bicarbonate

Question 17

PO4 [3-]

Answer 17

Phosphate

Question 18

HPO4 [2-]

Answer 18

Hydrogen Phosphate

Question 19

H2PO4 [-]

Answer 19

Dehydrogen phosphate

Question 20

NO3 [-]

Answer 20

Nitrate

Question 21

SO4 [2-]

Answer 21

Sulfate

Question 22

HSO4 [-]

Answer 22

Hydrogen sulfate

Question 23

MnO4 [-]

Answer 23

Permanganate

Question 24

MnO4 [2-]

Answer 24

Manganate

Question 25

CrO4 [2-]

Answer 25

Chromate

Question 26

Cr2O7 [2-]

Answer 26

Dichromate

Question 27

AsO4 [3-]

Answer 27

Arsenate

Question 28

CH3COO [-]

Answer 28

Acetate

Question 29

C2O4 [2-]

Answer 29

Oxalate

Question 30

CN [-]

Answer 30

Cyanide

Question 31

CNO [-]

Answer 31

Cyanate

Question 32

SCN [-]

Answer 32

Thiocyanate

Question 33

N [3-]

Answer 33

Nitride

Question 34

Hydration reaction

Answer 34

Any reaction in which wager is a reactant

Question 35

Stoichiometry

Answer 35

The study of quantitative relationships between masses and reactants of products

Question 36

Percentage yield

Answer 36

Percentage yield = (actual yield / theoretical yield ) * 100

Question 37

Acid base titrations

Answer 37

Used to measure concentrations of unknown acid or base in solution

Question 38

Redox titration

Answer 38

Used to measure concentration of oxidant or reductant in solution

Question 39

Solvent

Answer 39

Major components

Question 40

Solutes

Answer 40

Minor components

Question 41

Solubility rules | Soluble

Answer 41

1. All nitrates (NO3 [-]) 2. All acetates except Be [2+] 3. All fluorides (F[-]) except Mg [2+] Ca[2+] 4. All chlorides (Cl [-]) except Ag [+] Hg2[2+] and Pb [2+] 5. All bromides and iodized except Ag [+] Hg2[2+] Hg [2+]and Pb [2+] 6. All sulfates (SO4 [2-]) except Ag [+], Ba[2+], Ca [2+], Hg2[2+], Sr [2+], Pb [2+]

Question 42

Solubility rules | Insoluble

Answer 42

7. Groups 1&2 and NH4[+] sulfide a (S[2-]) are soluble. All others are not. 8. Group 1 and NH4[+] carbonates (CO3[2-]), (SO3[2-]) and phosphates (PO4 [3-]) are soluble. All others are not. 9. Group 1 and Ba[2+] hydroxides (OH[-]) are soluble. All others are not.

Question 43

Arrhenius definition of acid

Answer 43

When dissolved in water, dissociates to form hydrogen ions (H+). It is an H+ donor.

Question 44

Arrhenius definition of base

Answer 44

When dissolved in water, produces hydroxide ions (OH[-]). It is an OH [-] donor

Question 45

Bronsted lowry definition of acid

Answer 45

Substance that can donate H[+] ion

Question 46

Bronsted Lowry definition of base

Answer 46

A substance that can accept an H [+]

Question 47

Lewis acid

Answer 47

Any species that can accept electron pairs

Question 48

Lewis base

Answer 48

Any species that can donate electron pairs