a) Interpretation: The alkyne which can be used as a starting material for preparing methyl-n-propyl ketone is to be stated. Concept introduction: Addition of water to triple bonds occurs to yield an enol initially as the product. The enol then tautomerizes to give a ketone as the final product. Terminal alkynes and symmetrically substituted internal alkynes yield only one product. Unsymmetrically substituted internal alkynes yield a mixture of ketones as product. To state: The alkyne which can be used as a starting material for preparing methyl-n-propyl ketone.

Question

3. Titanium(III) chloride can be used to catalyze the polymerization of ethylene. It is prepared by hydrogen reduction of Titanium(IV) chloride. Reaction of hydrogen gas with titanium(IV) chloride gas produces solid titanium(III) chloride and hydrogen chloride gas. (a) Write a BALANCED chemical reaction for the preparation of titanium(III) chloride (b) A 250 L reaction vessel at 325°C is filled with hydrogen gas to a pressure of 1.3 atm. Titanium(IV) chloride is then added to bring the total pressure to 3.00 atm. How many grams of titanium(III) chloride will be produced after completion of the reaction? (c) What will be the pressure of the resulting hydrogen chloride gas that is also produced?

Answer 1

Question

Chapter 9.4, Problem 5P

Interpretation Introduction

a)

Interpretation:

The alkyne which can be used as a starting material for preparing methyl-n-propyl ketone is to be stated.

Concept introduction:

Addition of water to triple bonds occurs to yield an enol initially as the product. The enol then tautomerizes to give a ketone as the final product. Terminal alkynes and symmetrically substituted internal alkynes yield only one product. Unsymmetrically substituted internal alkynes yield a mixture of ketones as product.

To state:

The alkyne which can be used as a starting material for preparing methyl-n-propyl ketone.

b)

Interpretation Introduction

Interpretation:

The alkyne which can be used as a starting material for preparing diethyl ketone is to be stated.

Concept introduction:

Addition of water to triple bonds occurs to yield an enol initially as the product. The enol tautomerizes to give a ketone as the final product. Terminal alkenes and symmetrically substituted internal alkynes yield only one product. Unsymmetrically substituted internal alkynes yield a mixture of ketones as product.

To state:

The alkyne which can be used as a starting material for preparing diethyl ketone.

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