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oksano4ka [1.4K]
4 years ago
13

Compound A, C12H22O, undergoes reaction with dilute H2SO4 at 50°C to yield a mixture of two alkenes, B and C, C12H20. The major

alkene product, B, gives only cyclohexanone after ozone treatment followed by reduction with zinc in acetic acid. Draw the structure of the minor alkene product, compound C. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one.

Chemistry
1 answer:
Nataly_w [17]4 years ago
8 0

Answer:

Compound C is an alkene containing two cyclohexane rings attached with each other through a single bond.

Explanation:

  • Only cyclohexanone is obtained after ozonolysis of major alkene product. This means major alkene product, B , should contain contain two cyclohexane rings attached with each other through a double bond.
  • Compound B and C are obtained after dehyration of compound A by treating it with dilute H_{2}SO_{4} at 50^{0}\textrm{C}. So, compound A is an alcohol.
  • As compound B is obtained from compound A therefore compound A is an alcohol containing two cyclohexane rings attached with each other through a single bond.
  • Structures of all compounds are given below.

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Determine the heat energy needed to raise the temperature of 120 grams of ice at -5 to steam at 115°
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Answer:

Q = 30355.2 J

Explanation:

Given data:

Mass of ice = 120 g

Initial temperature = -5°C

Final temperature = 115°C

Energy required = ?

Solution:

Specific heat capacity of ice is = 2.108 j/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Q = m.c. ΔT

ΔT = T2 -T1

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4 years ago
How can the gravitational potential energy of an object be changed?
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Explanation:

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Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the production of alumin
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<u>Answer:</u> The percentage yield of HF is 73.36 %

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}     ....(1)  

For calcium fluoride:

Given mass of calcium fluoride = 6.25 kg  = 6250 g   (Conversion factor: 1 kg = 1000 g)

Molar mass of calcium fluoride = 78.07 g/mol

Putting values in above equation, we get:  

\text{Moles of calcium fluoride}=\frac{6250g}{78.07g/mol}=80.05mol

For the given chemical reaction:

CaF_2+H_2SO_4\rightarrow CaSO_4+2HF

By Stoichiometry of the reaction:

1 mole of calcium fluoride produces 2 moles of hydrofluoric acid

So, 80.05 moles of calcium fluoride will produce = \frac{2}{1}\times 80.05=160.1mol of hydrofluoric acid

Now, calculating the theoretical yield of hydrofluoric acid using equation 1, we get:

Moles of of hydrofluoric acid = 160.1 moles

Molar mass of hydrofluoric acid = 20.01 g/mol

Putting values in equation 1, we get:

160.1mol=\frac{\text{Theoretical yield of hydrofluoric acid}}{20.01g/mol}=3203.6g=3.20kg

To calculate the percentage yield of hydrofluoric acid, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield of hydrofluoric acid = 2.35 kg

Theoretical yield of hydrofluoric acid = 3.20 kg

Putting values in above equation, we get:

\%\text{ yield of hydrofluoric acid}=\frac{2.35g}{3.20g}\times 100\\\\\% \text{yield of hydrofluoric acid}=73.36\%

Hence, the percentage yield of HF is 73.36 %

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