Problem: The "free-base" form of cocaine (C17H21NO4) and its protonated hydrochloride form (C17H22ClNO4) are shown below; the free-base form can be converted to the hydrochloride form with one equivalent of HCl. For clarity, not all the carbon and hydrogen atoms are shown; each vertex represents a carbon atom with the appropriate number of hydrogen atoms so that each carbon makes four bonds to other atoms.How many mL of a concentrated 18.6 MHCl aqueous solution would it take to convert 1.00 kilograms (a "kilo") of the free-base form of cocaine into its hydrochloride form?

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FREE Expert Solution

We’re being asked to determine the volume (in mL) of 18.6 M HCl aqueous solution would it take to convert 1.00 kg of cocaine into its hydrochloride form.

We're given the following reaction:

\

Recall Molarity (M):

Molarity (M)=molL



We will calculate the volume of HCl in the following sequence of calculation: 

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Problem Details

The "free-base" form of cocaine (C17H21NO4) and its protonated hydrochloride form (C17H22ClNO4) are shown below; the free-base form can be converted to the hydrochloride form with one equivalent of HCl. For clarity, not all the carbon and hydrogen atoms are shown; each vertex represents a carbon atom with the appropriate number of hydrogen atoms so that each carbon makes four bonds to other atoms.

Cocaine is a seven membered ring with carbon as all of its vertices and both the upper left and lower left vertices single bonded to the same N; that N is single bonded to CH3. The upper right vertex is single bonded to COOCH3, and the right point is single bonded to an O that is single bonded to a CO attached to the lower left vertex of a benzene ring with its points arranged vertically. Cocaine is added to HCl to produce cocaine hydrochloride. Cocaine hydrochloride has the same structure as cocaine, except the N attached to the seven-membered ring is now N+ and is also single bonded to the H from HCl. Cl- is nearby.


How many mL of a concentrated 18.6 MHCl aqueous solution would it take to convert 1.00 kilograms (a "kilo") of the free-base form of cocaine into its hydrochloride form?

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What scientific concept do you need to know in order to solve this problem?

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Based on our data, we think this problem is relevant for Professor Casey's class at UNR.