Organic Chemistry Answers

Name the following

H3C CH CH CH3

H2C CH CH2 CH2 CH3

H2C CH CH CH CH3

H2C CH CH CBr CH3

Stibnite, Sb2S3, is a dark gray mineral from which antimony metal is obtained. What is the mass percent of antimony in the sulfide? If you have 1.00 kg of an ore that contains 10.6% antimony, what mass of Sb2S3 (in grams) is in the ore?

Base catalysed aldol condensation of benzaldehyde (2 equiv.) and acetone (1

equiv.) may give rise to many possible isomers. The number of possible isomers:

Why is the funnel heated before it is used in the recrystallization of acetanilide

How many signals would the following 5 compounds give in proton (1H) NMR?

• CH₃-CH₂-O-CH₂-CH₃
• CH₃-OH
• (CH₃)₂-CH-(C=O)-CH₂-CH₃
• Benzene C₆H₆
• Methyl benzene

Stibnite, Sb2S3, is a dark gray mineral from which antimony metal is obtained. What is the mass percent of antimony in the sulfide? If you have 1.00 kg of an ore that contains 10.6% antimony, what mass of Sb2S3 (in grams) is in the ore?

4.5 mol of HCl (g) area pumped into a 3.00L flask and heated at 80⁰C, what [Cl₂] will be found in the flask after equilibrium is established? keq at 80⁰C =0.36

5,5-dibromo-8-cyclohexyloct-2-yne

Mix 0.20 mol/L. NH-H:0 and 0.10 moLL HCl in equal volume, and calculate the pil value of the solution pkb for NH3.h2o is 4.75

The enthalpy of formation of NH3(g) as per the following reaction is -46.11 kJ/mol

at 298 K.

N2(g) + 3H2(g) = 2 NH3(g)

Calculate the value of enthalpy of formation of NH3(g) at 100 °C. The c; (JK"mol")

values are given as: N2(g) = 29.12; H2(g) = 28.82; NH3(g) = 35.06. Assume the

given heat capacity values to be temperature independent in the range.​