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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Shaz.ash on April 01, 2019, 09:32:26 PM

Title: Hi, Can someone lend a hand with this?
Post by: Shaz.ash on April 01, 2019, 09:32:26 PM

Hey, I need help answering these questions;
The molar compositions of a continuous reactor effluent of a green chemical process is assessed and the results are summarized in Table 1.

Table 1. Reactor Operating Conditions
Species                                          Molar Composition %
Formic Acid                                                 30
Leuvulinic Acid                                            28
Glucose                                                     17
Hydroximethylfurfural                                 25
Total                                                            100

Task 1.1 (Literature review-analysis.
(i) Write the chemical formula of the species listed in Table 1.
(ii) Stoichiometric Analysis (Applying the metrix reduction technique)

Task 1.2 Result and Discussion
(i) Write the Proposed Balanced Stochimetry
(ii) Results and Discussions.

Title: Re: Hi, Can someone lend a hand with this?
Post by: sjb on April 02, 2019, 01:40:14 AM

Any thoughts of your own - what is the formula of formic acid, for instance?

Title: Re: Hi, Can someone lend a hand with this?
Post by: Shaz.ash on April 02, 2019, 08:34:43 PM

I'm not sure if these are correct but the chemical formulas for each of these would be the following:


Formic Acid - CH2O2
HMF - C6H6O3
Leuvulinic Acid - C5H8O3
Glucose - C6H12O6.

If anyone could guide me on the Stoichiometric Analysis (using the metrix reduction technique) step by step?

Title: Re: Hi, Can someone lend a hand with this?
Post by: Mitch on April 02, 2019, 08:57:42 PM

There are literally no hits in Google for "metrix reduction technique."

This paper says glucose is converted to hydroximethylfurfural, from there it goes to formic acid and leuvulinic acid. I hope it helps.

Speciation and kinetic study of iron promoted sugar conversion to 5-hydroxymethylfurfural (HMF) and levulinic acid (LA) (https://pubs.rsc.org/en/content/articlelanding/2015/qo/c5qo00194c)
Org. Chem. Front., 2015, 2, 1388-1396
DOI: 10.1039/C5QO00194C (http://dx.doi.org/10.1039/C5QO00194C)

Title: Re: Hi, Can someone lend a hand with this?
Post by: Shaz.ash on April 02, 2019, 09:34:21 PM

That helps a lot thank you, but any advice on where I can find the best guide for carrying out Stoichiometric Analysis?

Title: Re: Hi, Can someone lend a hand with this?
Post by: Mitch on April 02, 2019, 09:58:56 PM

Hi Shaz, I'm honestly not sure. But I always start by writing the balanced chemical equation. I think you should start there too.

Title: Re: Hi, Can someone lend a hand with this?
Post by: Shaz.ash on April 02, 2019, 10:19:53 PM

Well thank you for your advice Mitch.

Title: Re: Hi, Can someone lend a hand with this?
Post by: AWK on April 03, 2019, 02:53:46 AM

Quote

Jan If anyone could guide me on the Stoichiometric Analysis (using the metrix reduction technique) step by step?

matrix ?
https://arxiv.org/pdf/1110.4321

Title: Re: Hi, Can someone lend a hand with this?
Post by: Shaz.ash on April 03, 2019, 06:01:10 PM

Yeah matrix, that pdf is quite useful thank you.