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VSEPR
What type of Reaction?
Balancing Equations
Moles
Limiting Reactants
100
Describe the molecular shape of carbon dioxide
Carbon dioxide is a linear molecule because it has no lone electrons bound to the central atom
100
C5H12(l) + O2(g) -> CO2(g) + H2O(l)
combustion reaction
100
When mixing molar solutions of NaOH, how can you increase the concentration of a solution?
Increase the amount of solute and decrease the amount of solvent
100
What is a limiting reactant?
The reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed.
200
Identify the geometric shapes describes these two molecules: PCl3 and NH3
Trigonal pyramidal
200
Li(s) + Cl2(g) -> LiCl(s)
synthesis reaction
200
1 mole of any substance is equal to:
6.02x1023 molecules or 6.02x1023 atoms or ions or molar mass
200
What is the product of the reaction between calcium and fluorine?
CaF2
300
The VSEPR formula: AX2E2 indicates that there are ____ atoms attached to the central atom and there are ____ unshared pairs of electrons on the central atom.
2, 2
300
K2CO3(s) -> K2O(s) + CO2(g)
decomposition reaction
300
___Na2O2(s) + ___H2O(l) + ___CO2(g) -> ___NaHCO3(aq) + ___O2(g)
2:2:4:4:1
300
Given the unbalanced equation: ___H2SO4(aq) + ___KOH(aq) -> ___H2O(l) + ___K2SO4(aq) Calculate the grams of water (H2O) produced from 75.5g of KOH?
H2SO4(aq) + _2_KOH(aq) -> _2_H2O(l) + K2SO4(aq) 24.2g H2O
300
2Al(s) + 3Cl2(g) -> 2AlCl3(s) Determine the amount of grams of aluminum required to produce 65 grams of AlCl3 product.
65g AlCl3 x 2 mol Al x 26.98g Al/ 133.33g AlCl3 = 26.33
400
Describe the molecular shape of carbon tetrachloride.
Carbon tetrachloride is a tetrahedral molecule because it has four atoms bound to its central atom and no lone electron pairs.
400
KBr(s) + H3PO4(aq) -> K3PO4(aq) + HBr(aq)
double replacement reaction
400
MgCl2(aq) + AgNO3(aq) -> Mg(NO3)2(aq) + AgCl(s). Is there a precipitate that formed, and if so, which compound?
AgCl
400
Students conduct an experiment in which they obtain 25.6 grams of PbI2. If the theoretical yield of PbI2 is 26.2 grams, calculate their % yield? (Actual / theoretical x 100)
25.6/26.2 x 100 = 97%
400
Balance and explaining what is the limiting reactant and how much CH2Cl2 (g) is formed ___CH4(g) + ___ Cl2(g) → ___CH2Cl2(g) + ___ HCl(g) A 25.0 g sample of methane gas is placed in a reaction vessel containing 2.58 mol of Cl2(g)
25gCH4 x ... 2.58g Cl2 x ...
500
Al(s) + HCl(aq) -> AlCl3(aq) + H2(g)
single replacement reaction
500
Pb(NO3)2(aq) + KI(aq) -> PbI2(s) + KNO3(aq)
double replacement reaction
500
21. Given the unbalanced equation: ___MnO2(s) + ___HCl(aq) -> ___MnCl2(aq) + ___H2O(l) + ___Cl2(g) When the equation is correctly balanced using the smallest whole number coefficients, the mole ratio of hydrochloric acid (HCl) to chlorine is:
4:1
500
Calculate the molar mass of aluminum chloride (AlCl3):
35.45(3) + 26.98 = 133.33 g/mol
500
If 35 grams of aluminum is reacted with 30 grams of chlorine gas, identify which reactant is the limiting reactant?
35g Al x ... 170.0 30g Cl2 x ... 38.0