Geometry/ hybridization
The hybridization of CO2
sp
Is C2H2 polar or nonpolar?
Non-Polar
Balance the following equation:
___ N2 + ___ F2 --> ___ NF3
___ N2 + __3_ F2 --> __2__ NF3
Will (NH4)2CrO4 dissolve in water?
Yes, all NH4+ compounds soluble
How should a concentration of 2 M be written when doing dimensional analysis?
2 mol / L
Molecules that are predicted to have an sp3 hybridization are ______ in electron domain geometry
tetrahedral
Which ONE is capable of H-bonding as a pure liquid?
A) C2H6; B) HI; C) CH3NH2; D) CH3COCH3
C) CH3NH2
N2 + 3H2 → 2NH3, how many moles of hydrogen are needed to fully react with 2.5 mol nitrogen?
7.5 mol H2
What solid forms when barium chloride reacts with sodium sulfate?
barium sulfate (BaSO4)
If I have a stock 2.00 M HCl, how much should I use to make a 1.00L 0.500 M solution?
0.25 L or 250 mL
Which would have the largest bond angle? OF2, CH4, NH3?
CH4
Why is CO2 nonpolar but SO2 polar?
CO2 linear - dipoles cancel
SO2 bent - dipoles don't cancel
In the combustion reaction, what is the coefficient in front of O2?
__C2H6 + __ O2 --> ___ CO2 + __ H2O
_2_C2H6 + _7_ O2 --> _4__ CO2 + _6_ H2O
Compounds with what ions are always soluble (there are 3)
Group 1, NO3-, NH4+
How many grams are needed of sodium sulfate to make a 1.00 L 0.700 M soln.
99.4g NaNO3
What is the molecular geometry of CO32-?
trigonal planar
Rank in order of boiling point from lowest to highest:
CH3Cl, C2H6, CH3OH
C2H6, CH3Cl, CH3OH
Balance the following equation
CO2 + H2O --> C6H12O6 + O2
6 CO2 + 6 H2O --> C6H12O6 + 6 O2
BaSO4, PbSO4, Ag2SO4 and SrSO4. What do these compounds have in common?
NONE are soluble in water
How many mL of 1.42 M NaOH are needed to neutralize 0.0072 mol of H2SO4?
0.0101 L or 10.1 mL of NaOH
The molecular geometry of ClF3
T-shape
The molecule with the highest boiling point out of the following: CH4, AgCl, CH3CH2OH.
AgCl (ion-ion is strongest IMF!)
How many g of LiNO3 are needed to react with excess PbSO4 to produce 250 g of Li2SO4?
(LiNO3 = 68.95 g/mol; Li2SO4 = 109.94 g/mol)
2LiNO3 + PbSO4 --> Li2SO4 + Pb(NO3)2
313.5g LiNO3
Calculate the mass of PbSO4 (s) formed when 1.25 L of 0.0500 M Pb(NO3)2 (aq) is reacted with 2.00 L of 0.0250 M Na2SO4 (aq)
15.2g PbSO4
50.0mL of (?? M) NaOH was titrated with 35.2mL of 0.060M HCl to reach neutralization. What is the concentration of NaOH?
0.0422 M NaOH