Hybridization
What is the hybridization of carbon in CO2?
sp
Balance this equation: NO2 + O2 + H2 ---> HNO3
4 NO2 + 1 O2 + 2 H2 ---> 4 HNO3
Calculate the mass in mg of hydrogen gas needed to produce 1.25 g NH3.
2NO + 5H2 --> 2NH3 + 2H2O
370 mg
What is a diprotic acid?
an acid that has two H+ that can be removed
What is the hybridization of the central atom in phosphorus pentafluoride?
sp3d
Balance the following equation: C8H14O2S + O2 --> CO2 + H2O + SO2
2 C8H14O2S + 23 O2 --> 16 CO2 + 14 H2O + 2 SO2
How many grams of chlorine gas are needed to produce 46.5 g iron (II) chloride.
FeTiO3 + 3Cl2 + 3C --> 3CO + FeCl2 + TiCl4
78.0 g Cl2
What is the name of this acid: HBrO
hypobromous acid
Draw the Lewis structure for CH2NH. What is the total number of sigma and pi bonds?
4 sigma bonds and 1 pi bond
Write a balanced chemical equation for the complete combustion of C5H10O2S2
2 C5H10O2S2 + 17 O2 --> 10 CO2 + 10 H2O + 4 SO2
122 g of ZnS are combined with 84.0 g of oxygen. What is the mass of g in SO2 that can be produced?
2ZnS + 3O2 --> 2ZnO + 2SO2
80.2 g SO2
You want to actually produce 275 g PCl3 using the reaction below. If the percent yield is 65.8%, how many grams of PCl3 are needed?
417.96 g PCl3
List the 6 strong acids
HCl, HBr, HI, HNO3, H2SO4, HClO4
Draw the Lewis structure for CH2NH. What is the sigma and pi bond hybridization between the C and the N?
sigma component: C(sp2) --- N(sp2)
pi: C(p) --- N(p)
When P4 reacts with potassium chlorate, the reaction produces tetraphosphorus decoxide and potassium chloride. Write a balanced chemical equation. What is the sum of the coefficients?
10KClO3 + 3P4 --> 3P4O10 + 10KCl
What volume (in mL) of 2.40 M C2H5OH contains 1.35 x 1021 molecules of C2H5OH?
0.934 mL C2H5OH
What volume in mL of 12.0 M HCl solution is needed to make 80.0 mL of 0.240 M HCl?
1.6 mL stock solution
Assign oxidation states for NaMnO4
Na: +1
Mn: +7
O: -2
Determine the hybridization HCN and label all bonds with their bonding scheme
C(sp) --- H(s)
C(sp) --- N(p)
2pi: C(p) --- N(p)
Balance and complete the net ionic equation for K2CO3 (aq) + CaCl2 (aq) --> KCl (aq) + CaCO3 (s)
CO32- + Ca2+ --> CaCO3
You dissolve 25.0 g Ca(C2H3O2)2 (158.168 g/mol) in enough water to make 50.0 mL of stock solution. What volume in mL of this stock solution is needed to make 225 mL of a solution with an acetate concentration of 0.250?
8.90 mL stock solution
The titration of 12.0 mL of an unknown triprotic acid requires 18.15 mL of 0.150 M NaOH solution to reach the equivalence point. What is the concentration of the unknown acid sample?
H3A + 3NaOH --> 3H2O + Na3A
0.076 M H3A
Indicate the oxidizing and reducing agents in the following reaction: NaMnO4 + 4HCl + Cr --> NaCl + CrCl3 + 2H2O + MnO2
Mn: reduced, oxidizing agent
Cr: oxidized, reducing agent