- A sample of methane, CH4, occupies 4.50 L at STP. How many moles of methane are
present?(Solved)
A sample of methane, CH4, occupies 4.50 L at STP. How many moles of methane are
present?
Date posted: April 8, 2019.
- How many O2 molecules are present in 0.470 g of oxygen gas?(Solved)
How many O2 molecules are present in 0.470 g of oxygen gas?
Date posted: April 8, 2019.
- How many sulfur atoms are in 1.56 g sulfur?(Solved)
How many sulfur atoms are in 1.56 g sulfur?
Date posted: April 8, 2019.
- Write the structural formula of the organic product (indicated as i, ii, iii ) in the
following reactions.(Solved)
Write the structural formula of the organic product (indicated as i, ii, iii ) in the
following reactions.
i)
ii)
Date posted: March 18, 2019.
- Give the complete mechanism for each of the following reaction. Use curly arrows
to show movement of electrons.(Solved)
Give the complete mechanism for each of the following reaction. Use curly arrows
to show movement of electrons.
Date posted: March 18, 2019.
- Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis(Solved)
Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis
Date posted: March 18, 2019.
- Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis(Solved)
Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis
Date posted: March 18, 2019.
- Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis(Solved)
Date posted: March 18, 2019.
- Given the reagents 1-bromoethane, magnesium, diethylether and ethyl acetate, show
the steps in the synthesis of 3-methyl-3-pentanol(Solved)
Given the reagents 1-bromoethane, magnesium, diethylether and ethyl acetate, show
the steps in the synthesis of 3-methyl-3-pentanol
Date posted: March 18, 2019.
- Give the structural formula for each of the following compounds.
(i) 3-Benzyl-5-phenylpentanol
(ii) 4-amino-1,2-epoxycyclopentane
(iii) trans-2-Methyl-3-hexene
(Solved)
Give the structural formula for each of the following compounds.
(i) 3-Benzyl-5-phenylpentanol
(ii) 4-amino-1,2-epoxycyclopentane
(iii) trans-2-Methyl-3-hexene
Date posted: March 18, 2019.
- Write the IUPAC name for each of the following structures. Indicate the stereo chemistry where shown.
(Solved)
Date posted: March 18, 2019.
- Draw the line structural formula for each of the three forms of pentadiene (isolated,
conjugated, cumulated)(Solved)
Draw the line structural formula for each of the three forms of pentadiene (isolated,
conjugated, cumulated)
Date posted: March 18, 2019.
- Explain the contrast of water miscibility of alcohols with increase in the carbon chain(Solved)
Explain the contrast of water miscibility of alcohols with increase in the carbon chain.
Date posted: March 18, 2019.
- Why do alcohols have much higher boiling points than hydrocarbons of comparable molecular weight?(Solved)
Why do alcohols have much higher boiling points than hydrocarbons of comparable molecular weight?
Date posted: March 18, 2019.
- Describe the bonding in the simplest alkene (ethene H2C=CH2) using sketches where
applicable. (Solved)
Describe the bonding in the simplest alkene (ethene H2C=CH2) using sketches where
applicable.
Date posted: March 18, 2019.
- In an experiment, 54.20 grams of phosphorus tribromide (PBr3) was reacted with an excess of 2-methylpropanol (CH3CH(CH3)CH2OH). (Solved)
In an experiment, 54.20 grams of phosphorus tribromide (PBr3) was reacted
with an excess of 2-methylpropanol (CH3CH(CH3)CH2OH). The reaction yielded 57.96 grams of 1-Bromo-2-methylpropane (CH3CH(CH3)CH2Br) and phosphoric acid (H3PO3), Write a blanced equation and calculate the percentage yield for the alkyl bromide. [H = 1, C = 12, P = 31, Br = 80]
Date posted: March 15, 2019.
- How does one detect the presence of a halogen in an organic compound using
the Beilstein test?(Solved)
How does one detect the presence of a halogen in an organic compound using
the Beilstein test?
Date posted: March 15, 2019.
- What is the order of stability between methyl, 1°, 2° 3° carbocations? Name and
explain each of the two factors that determine the stability of carbocations.(Solved)
What is the order of stability between methyl, 1°, 2° 3° carbocations? Name and
explain each of the two factors that determine the stability of carbocations.
Date posted: March 15, 2019.