How Much Sodium Borohydride Solution Is Needed for Compound B Reduction?

[lostinphysics44]

please help fast! NaBH4 reduction...

Homework Statement

Compound B [structure shown below] was reduced with sodium
borohydride. The student used 1.1015g of Compound B. She prepared the
sodium borohydride solution by dissolving 1.0085g of sodium borohydride in
sufficient solvent to prepare 17.00mL of solution. Calculate the volume of the
sodium borohydride solution required to reduce Compound B.

Homework Equations

compound B is a 7 member carbon ring, with C=O bonds in the 1,3,6 positions ont he ring. what i don't get is what the overall reaction is, so i can get the equation and do the stoichiometry. i know that NaBH4 will add a H to each oxygen but i really don't get where to go from there. thanks for your help.

 

[chemisttree]

...what i don't get is what the overall reaction is, so i can get the equation and do the stoichiometry. i know that NaBH4 will add a H to each oxygen but i really don't get where to go from there. thanks for your help.

Then that's where you need to start your investigation. You need to research the mechanism of borohydride reductions (BTW, it doesn't add H to oxygen) and go from there.

 

[Blueshift5]

Hello, it seems like you are working on a lab or research project involving the reduction of Compound B using sodium borohydride. I can understand that you are in a hurry to get your results, but it's important to take your time and make sure you understand the overall reaction and the process before proceeding.

The overall reaction for the reduction of Compound B with sodium borohydride is a nucleophilic addition reaction. The sodium borohydride (NaBH4) acts as a reducing agent, providing hydride ions (H-) to the carbonyl groups (C=O) in Compound B. This results in the formation of alcohols (R-OH) in place of the carbonyl groups.

To determine the volume of sodium borohydride solution required for the reduction, you will need to use the stoichiometry of the reaction. From the given information, we can calculate the moles of Compound B and the moles of sodium borohydride used. The ratio of these two moles will give us the stoichiometric ratio, which can then be used to calculate the volume of sodium borohydride solution required.

I would recommend reviewing the concepts of stoichiometry and nucleophilic addition reactions before proceeding with your calculations. Also, make sure to double check your units and conversions to ensure accurate results.

I hope this helps. Good luck with your project!