Kinetics
What is equilibrium?
Equilibrium is when reactants and products are in a state of no further changes in respect to time.
What is the melting/freezing point of water?
Zero degrees Celsius
What is considered an Acid on a pH scale?
Less than 7 us considered and Acid on a pH scale.
What is the electron configuration of Manganese?
1s2 2s2 2p6 3s2 3p6 4s2 3d5
What is the rule of first ionization energy when going down a group in the periodic table?
When going down a group there is more distance and less attraction, decreasing the ionization energy.
What is activation energy?
Activation energy is the energy needed to start a reaction.
What are the formulas used for heating curve?
q=mc(delta)T
q=m(delta)Hfus
q=m(delta)Hvap
Is Calcium Hydroxide (CaOH2) an acid, base, both, or neither?
Calcium Hydroxide (CaOH2) is a base.
What is the electron configuration for the element Ar?
1s2 2s2 2p6 3s2 3p6
What is the rule of ionization energy when going from left to right in a period?
When going from left to right the ionization energy increases and becomes more stable.
What does a catalyst do in a chemical reaction?
A catalyst increases the rate of reaction without being used in the reaction itself.
How many calories are given off when 25 grams of water at zero degrees celsius freezes. (Cal=79.72) Simplify to 3 significant figures.
q=(25g)(79.72cal/g)
=1990 cal
Is H2 an acid, base, both, or neither?
H2 is neither an acid or a base.
What is the electron configuration for Rubidium?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
What is the trend in atomic radius when going down a group?
When going down a group atomic radius increases.
When do you not include a species in an expression?
When it is a liquid or a solid.
Calculate the amount of energy needed to change 15 grams of liquid water from 30 degrees celcius to 100 degrees celsius, then change to steam at 100 degrees celsius. Simplify to 3 significant figures.
q1=(15g)(4.18J/g*oC)(70oC)
=4389J
q2=(15g)(2260 J/g)
=33900J
q=38300J
Is N2H4 an acid, base, both, or neither?
N2H4 is a base.
What is the electron configuration for Zn?
What is the trend in atomic radius when going from left to right?
Atomic radius decreases when going from left to right on the periodic table.
Create the kinetics equation for:
NH3 + 2OH --> 2H2O + N
Keq=[N]/[NH3] [OH]2
Nine grams of ice(water) at -5 degrees celsius is heated until it becomes liquid water at 18 degrees celsius. Simplify to 3 significant figures. (Ice =2.1 J/g*oC)
q1=(9g)(2.1J/g*oC)(5oC)
=94.5J
q2=(9g)(334J/g)
=3006J
q3=(9g)(4.18J/g*oC)(18oC)
=677.16J
=3780J
pH=5.7
Find: pOH, [OH-], [H+]
pOH=8.3
[OH-]=5*10^-9
[H+]=1.99*10^-6
What is the electron configuration for In?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4p10 5p1
What is shielding and when is it used in the atomic radius trend.
When electrons repel other electrons from getting ti the nucleus, happens when going down a group in the periodic table.