Will it slush (solubility rules)
No exceptions here, these three things will ALWAYS slush!
Group 1A elements, Ammonium, the -ates (Nitrate, acetate, chlorate)
Difficulty: 1
What reaction is happening here?
2Na + Cl2 → 2NaCl
Combination :D
Diff: 1
Define Ionization and give an example of a solute that will ionize in solution.
The process of a molecule disassociating into a solution and making ions in said solution, happens with ionic bond cleavage in water.
NaCl gives Na+ and Cl-
What is the solute, and solvent?
I add 50g of NaCl to 1L of water.
Solute NaCl
Solvent water
Diff:1
5 x 5 = ?
5.0 x 5 = ?
5.0 x 5.0 = ?
405020 x (6.022 x 1023) =
30 or 3x101
30 or 3x101
25. or 25
2.43903 x 1029 CONSTANTS do not affect sig figs (aka avocados # does not effect sigs)
Will it slush? PbCl2
NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Because...?
Difficulty: 1
What reaction type is happening here
H2O2 (aq) → H2O (l) + O2 (g)
Decomposition D:
Diff: 1
Give one example (nonspecific or specific) of each:
Strong electrolyte, Weak electrolyte, Non-electrolyte
Strong:
Strong acids, strong bases, ionic compounds
Weak:
Weak acids, weak bases
Non:
Molecular compounds (traditionally glucose is a good example)
What is the solute and solvent?
I add 100ml of EtOH to 10ml of H2O.
EtOH - solvent
water - solute (rare)
Diff:2
Convert 20 Miles Per Hour to Feet Per Second
1 mile = 5280 feet
:D
29.3333 sooooo 29!
What compounds are dissociating into water in the following list?
HCl, (NH4)2O, Ni3(PO4)2, HgSO4, Pb(OH)2
Soluble
HCl, (NH4)2O
Insoluble
Ni3(PO4)2, HgSO4, Pb(OH)2
Difficulty:3
What reaction is occurring
2CH3 + 3O2 → 2CO2 + 2H2O
Difficulty 2
What is the difference between a strong and weak electrolyte?
What is the specific thing an electrolytic solution can do that other solutions cannot?
Amount of dissociation present in the solute.
Hydrofluoric acid vs Hydrochloric acid.
Conduct electricity.
Diff: 3
What does it mean when a compound is hydrated?
Give me the empirical formula of a compound that is
84% Carbon, and 16 % Oxygen.
C7O
What would the formula be is the MW was 200g/mol?
Eh...Technically???
Ca(OH)2 is a slightly soluble compound
Difficulty: 5
Alright, what the H*ck is going on here?
Pb(NO3)2 (aq) +2NaI (aq) → PbI2 (s) + 2NaNO3 (aq)
Precipitation
What is your precipitate?
Diff: 3
Label the following as strong or weak electrolytes, or nonelectrolytes.
HF, HCl, NaOH, C6H12O6, NH3, HgSO4
Strong - HCl, NaOH
Weak - NH3, HF
Non - HgSO4, C6H12O6,
Difficulty: 5
If I perform the following reaction:
AgNO3 + NaCl → NaNO3 + AgCl
What are my STATE symbols for each participating compound? (s), (l), (g), (aq).
aq, aq, aq, s
In a reaction between hydrogen gas (H₂) and nitrogen gas (N₂) to form ammonia (NH₃), you have 10 grams of hydrogen gas and 46.3215 grams of nitrogen gas. The balanced equation for the reaction is:
N2 + 3H2 → 2NH3
Determine the limiting reagent.
MW H2 = 2.02
MW N2 = 28.01
N2 is limiting, we would need 4.9605 moles of H2 to react with our sample of N2 completely, and we have 4.9606. Leaving us with how much H2?
What is the difference between solubility and dissociation?
Can something that's insoluble, dissociate?
And vice versa can something that doesn't dissociate be soluble?
Solubility is the ability of a solute to dissolve in a solvent
Dissociation is the ability of a solute to break its bonds after or while dissolving in a solvent.
Therefore something that cannot dissolve in a solution cannot break its bonds in a solution.
But something that doesn't break its bonds CAN in fact dissolve (think once again to Glucose in water C6H12O6 is soluble, does NOT dissociate)
I make a sammy from many ingredients. I then drop the sammy on the floor, ingredients everywhere.
Then Oh Sweet Jesus the sammy spontaneously catches on fire in the presence of oxygen leaving me with nothing but some lousy CO2 and H2O.
What reactions happened and in what order?
Combination
Decomposition
Combustion
Diff: 3
When you dissolve table salt into water is the salt experiencing a chemical or physical change?
What about Glucose (C6H12O6) when dissolved in water?
NaCl - Physical
Glucose - physical
Why do things precipitate OUT of solution when both reactants easily dissociate INTO the solution?
Because 2 soluble things can create one insoluble product. Solubility rules rule, don't they?
A 60g sample of a compound containing carbon, hydrogen, and possibly oxygen is burned in excess oxygen. The combustion produces 88 grams of carbon dioxide (CO₂) and 32 grams of water (H₂O). Determine the empirical formula of the compound.
CH2O