General Chemistry

Question 1

Combustion reaction

Answer 1

Hydrocarbon or alcohol reacts with O2 to form CO2 and H2O

Question 2

Cohesion in measuring tool

Answer 2

Molecules of liquid stick to each other - forming convex meniscus

Question 3

Adhesion in measuring tool

Answer 3

Molecules of liquid stick to glass of tool - forming a concave meniscus

Question 4

Neutralization problems

Answer 4

n1M1V1 = n2M2V2

n - is normality. How many equivalents of H+ and OH- there are…

Question 5

Bond strength decreases…

Answer 5

…as the difference in electronegativity increases

Question 6

A stronger acid has…

Answer 6

Weak bond strength

Question 7

Bond dissociation energies are always…

Answer 7

Positive

Question 8

Half life for 1st order reaction

Answer 8

t(1/2) = 0.693/k

k - is the rate constant

Question 9

Accuracy

Answer 9

Measurement is close to true value

Question 10

Precision

Answer 10

Measurement is consistent

Question 11

Good electrolytes

Answer 11

Strong acids, strong bases, ionic compounds

Question 12

Best definition of boiling point

Answer 12

Temp when VP of liquid equals surrounding pressure

Question 13

Volatility

Answer 13

Ability for liquid to evaporate

More volatile=weak IMF’s

Question 14

[H+] for weak acids…

Answer 14

=sqrt(Ka x M)

**also for OH-, just with Kb

Question 15

Reacting a hydrocarbon with oxygen produces…

Answer 15

H20 and CO2

Question 16

0th law of thermodynamics…

Answer 16

Two systems are in equilibrium with a third…then they are all in equilibrium with each other

Question 17

Work eqn at constant pressure (isobaric)…

Answer 17

W=-P(V2-V1)

Question 18

Henry’s Law (solubility of a gas)

Answer 18

C=kP

C - cons of a gas in soln
P - partial pressure of gas above soln

Question 19

Non state functions

Answer 19

Heat and work

Question 20

Zero order reaction

Answer 20

Slope=-k

Plot is conc vs time

Question 21

1st order reaction

Answer 21

Slope=-k

Plot is ln(conc) vs time

Question 22

2nd order rxn

Answer 22

Slope = k

1/conc vs time

Question 23

Which elements react violently with pure oxygen?

Answer 23

Group 1 and 2 metals

Group 1 alkali react more violent than group 2alkaline earth metals

Question 24

Nuclear binding energy

Answer 24

Energy needed to split the nucleus

Question 25

Boyles law

Answer 25

P1V1 = P2V2

Question 26

Charles Law

Answer 26

V1/T1 = V2/T2

Question 27

Allotrope

Answer 27

Different structural forms of the same element

Question 28

Gas solubility increases when...

Answer 28

Pressure increases Temperature decreases

Question 29

7 diatomic molecules Never have fear of ice cold beer

Answer 29

``` Nitrogen Hydrogen Fluorine Oxygen Iodine Chlorine Bromine ```

Question 30

Bond energies

Answer 30

Bonds broken - bonds formed

Question 31

Isoelectronic

Answer 31

Same amount of valence electrons

Question 32

Vacuum filtrations

Answer 32

Technique that separates particles based on charge

Question 33

Diamagnetism

Answer 33

Repels magnetic fields

Question 34

Paramagnetism

Answer 34

Attracts magnetic fields

Question 35

Atoms charge goes down

Answer 35

Reduced

Question 36

Atoms charge goes up

Answer 36

Oxidized

Question 37

Lower Rf

Answer 37

More polar

Question 38

Higher Rf

Answer 38

Less polar