Molar Conversions
What number of molecules are present in 5.92 g of butanol (C4H10O; MM = 74.12 g/mol)?
4.81x1022 molecules
Potassium reacts with manganese (IV) nitrate.
Write and balance the chemical equation. Identify the type of reaction and the states of matter for each substance.
4K(s) + Mn(NO3)4(aq) --> Mn(s) + 4KNO3(aq)
Single Displacement
Hydrochloric acid reacts with potassium hydroxide.
Write and balance the total ionic equation, the net ionic equation, and identify the spectator ions.
Total - I'm not writing that whole thing out on here lol
Net - H+(aq) + OH-(aq) --> H2O(l)
Spectator Ions: K+ and Cl-
How many gold (Au; d = 19.3 g/mL) atoms are present in a gold bar with a volume of 12.5 cm3
7.38x1023 atoms
Draw a particle diagram showing a strong acid dissolved in water.
There should be water molecules and the acids should be completely dissociated. The hydrogen ion should be near the oxygen-end of the water molecules and the left-over acid should be near the hydrogen-end of the water molecules
What is the mass of 8.37x1023 formula units of barium hydroxide (Ba(OH)2; MM = 171.34 g/mol)?
238 g
Phosphoric acid reacts with lithium hydroxide.
Write and balance the chemical equation. Identify the type of reaction and the states of matter for each substance.
H3PO4(aq) + 3LiOH(aq) --> 3H2O(l) + Li3PO4(aq)
Neutralization
Aluminum reacts with hydrobromic acid.
Write and balance the total ionic equations, the net ionic equation and identify the spectator ions.
Total - lol i'm not writing all that
Net - 2Al(s) + 6H+(aq) ---> 2Al+3(aq) + 3H2(g)
Spectator ions - 6Br-(aq)
A solution with a volume of 25.50 mL is generated and has a 0.4 M concentration of phosphate ions. What mass of sodium phosphate (Na3PO4; MM = 163.94 g/mol) was used to create the solution?
1.67 g
Draw a particle diagram showing a weak base dissolved in water
There should be water molecules and the bases should be partially dissociated (some base still bonded should be left over). The dissociated hydroxide ion should be near the hydrogen-end of the water molecules and the left-over base should be near the oxygen-end of the water molecules
What number of hypochlorite ions dissociate in 2.45 g of aluminum hypochlorite (Al(ClO)3; MM = 181.34 g/mol)
2.44x1022 hypochlorite ions
Lead (IV) nitrate reacts with calcium iodide.
Write and balance the chemical equation. Identify the type of reaction and the states of matter for each substance.
Pb(NO3)4(aq) + 2CaI2(aq) --> PbI4(s) + 2Ca(NO3)2(aq)
Precipitation
Potassium carbonate reacts with aluminum nitrate.
Write and balance the net ionic equation and identify the spectator ions.
Total - lololol i'm not writing that
Net - 3CO32-(aq) + 2Al3+(aq) ---> Al2(CO3)3(s)
Spectator - 6K+(aq) and 6NO3-(aq)
What is the volume of a sample of carbon (C; d = 2.2 g/cm3) that contains 5.28x1025 atoms?
479 cm3
Draw a particle diagram of sulfuric acid dissolved in water
There should be two hydrogen ions for each sulfate ion. Should be completely dissociated because sulfuric acid is a strong acid. The hydrogen ions should be near the oxygen-end of the water molecules and the sulfate ions should be near the hydrogen-end of the water molecules
What mass of propane (C3H9; MM = 44.10 g/mol) can be formed from 6.25x1024 molecules of hydrogen gas (H2)?
305 g
Ammonium chloride reacts with potassium hydroxide.
Write and balance the chemical equation. Identify the type of reaction and the states of matter for each substance.
NH4Cl(aq) + KOH(aq) --> NH4OH(aq) + KCl(aq)
NO REACTION
Phosphoric acid reacts with cobalt (II) bromide.
Write and balance the net ionic equation and identify the spectator ions.
Total - nice try i'm not writing that lol
Net - Fe(s) + Ni3+(aq) ---> Fe3+(aq) + Ni(s)
Spectator - 3I-(aq)
DAILY DOUBLE
What is the volume of a single atom of iron (Fe; d = 7.87 g/cm3)?
1.18x10-23 cm3
Assign the following pH values to the following substances:
pH values: 2, 10, 13, 4
substances: HCl, HClO, KOH, Mg(OH)2
HCl - pH of 2
HClO - pH of 4
Mg(OH)2 - pH of 10
KOH - pH of 13
How many formula units of iron (III) sulfate (Fe2(SO4)3) can be formed from 35.9 g of iron?
1.94x1023 formula units
Barium nitrate reacts with potassium sulfate.
Write and balance the chemical equation. Identify the type of reaction and the states of matter for each substance.
3Ba(NO3)2(aq) + 2K3PO4(aq) --> Ba3(PO4)2(s) + 6KOH(aq)
Precipitation
Silver hydroxide reacts with carbonic acid.
Write and balance the net ionic equation and identify the spectator ions.
It's the same as the molecular equation AND there's no spectator ions!
2.5 cm3 of aluminum nitrate (Al(NO3)3; MM = 212.99 g/mol; d = 1.4g/mL) is dissolved in 100. mL of water. What is the concentration of the nitrate ion in my solution?
0.49 M
Draw two particle diagrams that show the reactant and the product side of the reaction between phosphoric acid and strontium hydroxide.
There should be two particle diagrams. The reactant side should show partially dissociated phosphoric acid and strontium hydroxide. These are both a weak acid and a weak base. The product side should show left over acid and base along with a few new products.