reactions
What is the Law of Conservation of Mass?
Mass is neither created nor destroyed in chemical reactions
PCl5 + 4 H2O → H3PO4 + 5 HCl
What is the mole ratio of PCl5:HCL?
1:5
2Cr(NO3)3 (aq) + 3FeSO4 (aq) → 3Fe(NO3)2 (aq) + Cr2(SO4)3 (aq)
What is the net ionic equation?
no reaction! (all aqueous)
What is an acid?
Proton donor
What is the difference between oxidation and reduction?
Oxidations reaction lose electrons while reduction reactions gain electrons
What is a decomposition reaction?
One reactant yields two products
1CuCl2 + 2 NaNO3 -> 1Cu(NO3)2 + 2 NaCl
Using the equation above, if 15 grams of copper (II) chloride react with 20 grams of sodium nitrate, how much sodium chloride can be formed in grams?
13.04 grams NaCl
Is RbNO3 soluble or insoluble?
Soluble
What is a base?
Proton acceptor
What is Flourine's oxidation number
-1
What is a combination reaction?
Combine two substances to get one product
2Al + 6HCl -> 2AlCl3 + 3H
Using the equation above, how many moles of AlCl3 are generated from 2.00 grams of Al?
0.074 moles of AlCl3
3Ca(OH)2 (aq) + 2FeCl3(aq) → 3CaCl2(aq) + 2Fe(OH)3 (s)
What is the net ionic reaction?
2Fe+3 (aq) + 6OH (aq) ---> 2Fe(OH)3
H2CO3 +Sr(OH)2→
What are the products of this acid/base reaction?
2H2O + SrCO3
What is Iron's oxidation number in Fe2O3
+3
What is a combustion reaction? Give and example
air
Reacts with oxygen and creates carbon dioxide (CO2) and Water( H20)
4 FeS + 7 O2 → 2 Fe2O3 + 4 SO2
How many grams of O2 are needed to generate 5.00 grams of SO2?
4.37 g of O2
Is NH4CH3COO soluble or insoluble?
Soluble
2 HBr + Ba(OH)2-->
What are the products for the acid/base reaction
2H2O + BaBr2
Mg + 2HCl --> MgCl2 + H2
What is reduced and what is oxidized?
Mg is oxidized, and H is reduced
Give an example of the following reactions:
Combination, decomposition, and combustion
combination:2H2 + O2 -> 2H2O
decomposition: ClNa --> Cl + Na
combustion: CH4 + O2 —> H2O + CO2
4NH3 + 5O2 -> 4NO + 6H2O.
In an experiment using the equation above, 3.25 g of NH3 are allowed to react with 3.50 g of O2. If 1.50g of NO is obtained what is the percent yield?
57%
2CoBr3 (aq) + 3K2S(aq) → Co2S3 (s) + 6KBr (aq) What is the net ionic equation?
2Co3+(aq) + 3S2-(aq) --> Co2S3
H2SO4(aq) + 2NaOH(aq)
Write the products for this act base reaction
Na2SO4(aq) + 2H2O(l)
2Fe + 3V2O3-->Fe2O3 + 6VO
What is oxidized and what is reduced?
Fe is oxidized and V is reduced