Le Chatlier, Ph and Ocean acidification
When ocean pH drops and the water becomes more acidic, what essential compound is depleted, making it difficult for marine organisms like clams and corals to build their shells?
Carbonate ions (CO3/2−) or Calcium carbonate (CaCO3)
what are three distinct characteristics of bases?
bases are biter, and have PH less than 7, turn red litmus paper blue
If you have 44.01 grams of carbon dioxide (CO2), how many moles of CO2 do you have? (Molar mass of CO2= 44.01 g/mol).
1.00 mole > Calculation: 44.01 g÷44.01 g/mol=1.00 mole
Will a single displacement reaction happen with the equation below?
Zn(s) + CuCl2 (aq)?
Yes, Zinc is higher on the activity series than copper.
Which IMF explains why H2O has a high boiling point?
Hydrogen bonding
Using the provided equation, if you increase the concentration of nitrogen gas (N2), which direction will the equilibrium shift to relieve the stress?
to the right (toward the products / favors the forward reaction).
What does it mean when a chemical reaction reaches a state of dynamic chemical equilibrium?
It means the rate of the forward reaction equals the rate of the reverse reaction, and the concentrations of reactants and products stay constant.
you have 1.204×1024 atoms of pure Helium (He). What is the total mass of this sample in grams? (Molar mass of He = 4.00 g/mol).
8.00 grams
What kind of reaction is this?
2H2 + 02 > 2H2O
This is a synthesis reaction meaning 2 substances combined to form one product.
Does NH3 have hydrogen bonding?
Yes, nitrogen is bonded to hydrogen.
Using the provided equation, if you increase the pressure on the system, will the equilibrium shift toward the left (reactants) or toward the right (products)?
To the right (toward the products, because it shifts to the side with fewer moles of gas—2 moles of product vs. 4 moles of reactant).
Identify the BLA, BLB, CA, and CB in this reaction, and name one of the conjugate pairs: HF+H2O⇌F−+H3O+
* BLA: HF (donates H+),BLB: H2O (accepts H+), CB: F−, CA: H3O+, ACBP: HF and F− (Acid-Conjugate Base Pair) OR BCAP: H2O and H3O+ (Base-Conjugate Acid Pair)
Using the balanced chemical equation below what is the mole ratio of oxygen gas(02) to water (H2O)
2H2(g) + O2 (g)
1 moles O2/ 2 moles H20 mole O2
a 1:2 ratio
Balance the equation
__Al+__O2>__Al2O3
4Al+3O2 > 2Al2O3
Write the chemical formula for magnesium oxide
Mg2+O2>MgO
Since this reaction is exothermic (releases heat), how will the equilibrium shift if you decrease the temperature (cool the system down)?
To the right (toward the products, to generate more heat).
Calculate the [h+1] with [OH-1] to determine solution type (acidic, basic, neutral).
[OH-1] [OH-1]. 1.0x 10-5 m
=1.0x 10-9m
Calculate Molarity of NaOH given its molar mass of 40.00 g/mol
MM (40.00g/mol)
(11.57gNaOH/1) (1molNaOH/40.00gNaOH)=
11.57/40.00=0.28925molNaOH
Balance the equation
__Al+__O2> __Al2O3
4Al + 3O2 > 2Al2O3
Write Aluminum phosphate
AlPO4
Since this reaction is exothermic , how will the equilibrium shift if you decrease the temperature)?
To the right
Identify the BLA, BLB, CA, and CB in this reaction, and name one of the conjugate pairs:
BLA: HF (donates H+)
BLB: H2O (accepts H+)
CB: F−
CA: H3O+
ACBP: HF and F− (Acid-Conjugate Base Pair) OR BCAP: H2O and H3O+ (Base-Conjugate Acid Pair)
What is the mole ratio of O2:CO2:H2O?
C3H8+5O2>3CO2 + 4H2O
5:3:4
Classify the following reaction
2KClO3 > 2KCl + 3O2
This reaction is a decomposition reaction because one breaks into simpler substances.
Write iron (ll) sulfate
FeSO4