Questions tagged [applied-chemistry]

Chemical processes and theories being used in practical and experimental applications.

Filter by
Sorted by
Tagged with
2
votes
1answer
554 views

Working with stainless steel in 3 M HCl solution

We are trying to mix a material using 316 stainless steel blades in a $3~\mathrm{M}\ \ce{HCl}$ solution for 4 hours in a PE container? Will the blades stand for 4 hours or do they start to corrode in ...
3
votes
0answers
42 views

Particle size-energy distribution

I am not chemist, I am mathematician and interested in Population Balance Equations. I have a question about particle size-(breakage) energy distribution which mentioned in this article: http://www....
2
votes
1answer
121 views

Why do cookies prevent toothpaste from foaming?

If I eat cookies and subsequently brush my teeth such that there is still small amounts of cookie material stuck to my teeth, the toothpaste will not foam as well as usually, making the process less ...
3
votes
1answer
4k views

What does a radical mean here?

I'm really confused as none of the definitions of radical on the internet compare to this. This is from my college textbook of Applied Chemistry- Radicals Every inorganic compound is made up ...
1
vote
2answers
75 views

Rotovapping Aqueous Solutions - Need a cold trap?

I am working on a large scale natural product Rotovapping project. There are two botanical extracts to evolve, combined in processing. The solvents are 50% EtOH and 50% glycerin. There is a large ...
2
votes
0answers
88 views

Reactor mass balance with solid feed and overflow

I am modeling a lime slaker which is basically a stirred tank reactor with two separate feeds: 1. CaO feed screw (powder) 2. H2O binary valve (liquid) These react according to the reaction: $\ce{CaO(...
1
vote
0answers
136 views

How can I get rid of 700 million tons of chlorine gas?

I am conducting a thought experiment in which 40 million tons of hydrogen are supplied through saltwater electrolysis each year, creating 700 million tons of chlorine gas (Cl2) and 800 million tons of ...
1
vote
0answers
66 views

Hot-side and Cold-side rechargeable chemical compound

I am wondering if such a chemical/material exists which, upon triggering, becomes cold on one side and hot on the other in which after all the chemical bonds are broken/built (however it would work), ...
4
votes
0answers
114 views

Why is my rusting metal chainlink fence glowing bright orange and sparking?

This is a really practical question, but I can't find anything on Google. My metal chainlink fence is rusting and I have noticed that where the metal from one wire makes contact with another wire ...
2
votes
0answers
97 views

How is N to C ratio measured in forming austenitic stainless steel?

Nitrogen is the future hope of stainless steel industry; since in the production of austenitic steel it can even completely replace Nickel (which is relatively very expensive) in some cases and for ...
2
votes
2answers
230 views

Is N-methylimidazole an unusual solvent, or are there more common substitutes for it?

I want to test a process that was documented in the literature using N-methylimidazole. I am not doing academic research, but rather testing a documented reaction for application to an industrial ...
2
votes
0answers
40 views

Can there be gaps in autoignition temperatures?

I recently saw a request for solids that auto-ignite between 80C and 160C. I can't find any, and none have yet been suggested. Which leads me to the theoretical question: Is it possible for there to ...
2
votes
0answers
532 views

speeding up etching process of a copper board

Background: I use Sodium persulfate to etch a copper board to manufacture home made Printed Circuit Board (PCB). On the etching powder's plastic, it is written that: 1.5-2dl of etch powder in 1 ...
2
votes
1answer
116 views

gas chamber for calibrating gas sensors

I have $\ce{CO2}$, $\ce{CO}$, $\ce{O2}$ sensors and need to calibrate them. Can anybody help me to produce the $\ce{CO2}$, $\ce{CO}$, $\ce{O2}$ in laboratory for calibrating the sensors (the gas ...
1
vote
0answers
53 views

Resources where I can find approachable applied literature to understand general chemistry topics?

I am trying to find resources where I can learn about general chemistry topics outside the scope of a textbook, preferably in primary literature. Note, I have read through a general chemistry text and ...
7
votes
1answer
2k views

What is the difference between wet paint, dry paint, and in between those stages?

A day after painting a closet, I set a piece of wood on the wall of the closet that was painted a day ago as well. Within minutes, both of their layers of paint fused together (please correct me if ...
7
votes
2answers
692 views

Lithium batteries a reality - why not sodium, pottasium batteries?

Lithium batteries seem to be mainstream now, offering high energy density, high output current capability. Stepping down the periodic table there are alkali metals with greater electronegativity than ...
3
votes
0answers
49 views

Graph of compounds/reactions used on the industrial scale

I'm looking for a machine-readable database describing industrially useful reactions in terms of inputs, outputs, and (possibly) catalyzers etc. for a large portion of, or (much more preferable) the ...
8
votes
0answers
171 views

New finding in cobalt compound that absorbs oxygen - is it really a breakthrough?

Very recently Chemical Sciences published results of the discovery of a new cobalt compound that can absorb oxygen at presumably a higher capacity than what has been achievable before. The paper is ...
7
votes
1answer
99 views

Is there a known chemical that makes it possible to control the opacity of a large surface?

I have this idea of creating a large domed ceiling/roof for a building that can be made clear to see the actual sky, or made fully opaque/dark grey/black to project an artificial sky onto. I know ...
6
votes
1answer
997 views

How are piezoelectric crystals made?

I want to know how the powdered formed of piezoelectric material is converted to crystal like used in quartz watches. I know that some more chemicals are mixed with the material and then it is pressed ...
4
votes
2answers
1k views

Are there any STP liquids not containing large amounts of hydrogen and oxygen that are safe for human contact?

I'm working on a science fiction short story and was wondering if there were any liquids that would be safe to bathe in while traveling on a space craft with artificial (spin-based) gravity. In such ...
2
votes
2answers
348 views

Chemiluminescence - Determining Temperature from Luminol Imaging

I'm working on an imaging project and I have no background in chemistry or chemiluminescence for that matter. This is a Computer Science project. While most of the details for it have been worked out,...
2
votes
2answers
3k views

How do I make a paper white again?

Suppose I have a white paper originally. Then it is placed in a trunk, where soda spills occasionally and gasoline gas/gasoline also spills due to no gas tank cover. Over time, this paper becomes ...
3
votes
1answer
1k views

How Does The Mordant, Ferric Acetate, Interact With Tannins When Ebonizing Wood?

Ferric Acetate (II) and (III) are "mordants," which intensify wood staining in direct proportion to the tannin concentration in the wood. Some wood stainers add tea to increase the tannin content and ...
1
vote
2answers
1k views

Should the volume of a solute be factored into the volume of a solvent when preparing a substance of a certain molarity?

Upon being asked to prepare a solution of a given molarity from a solution with high concentration I was confused whether or not I should factor in the volume taken from the high concentration ...
1
vote
2answers
83 views

How can I detect a specific molecule on a surface?

Based on the comments and answers, this question wasn't very clear, so I have completely overhauled this question to make it much clearer in another post: How to create the equivalent of luminol for a ...
2
votes
2answers
59 views

“Chemicals” released in headphone with burned cable

My friend works at a headphone company at the support service and today she came across someone who claimed that he threw his broken headphone away because he had heard dangerous chemicals could be ...
2
votes
1answer
1k views

How to create the equivalent of luminol for a compound?

How would you go about creating a compound, like luminol, that would visibly react with monomorine I (5-methyl-3-butyloctahydroindolizine) on a household surface (like a kitchen floor)? It is ok if ...
12
votes
2answers
739 views

Can we process waste just by decomposing it to homogenous mass and extracting the elements from it?

I. e., what if we just burn trash completely or dissolve it in acid, get the resulting paste and extract pure chemical elements out of it by applying some physics and/or chemistry to it until no more ...
-1
votes
1answer
65 views

Dangerous chemicals from plastic

When the plastic of water bottles is exposed to light some atoms come off from it and blend with the water, so my question is which are the chemicals and its effects
4
votes
1answer
876 views

How do I perform a gravimetric analysis of Portland cement?

To determine the silica ($\ce{SiO2}$) content in Portland cement by gravimetric analysis it is digested in $\ce{HCl}$ and the silica residue is eventually measured. The chief constituents are $\ce{...
3
votes
1answer
334 views

How does oxygen fight odors? (Deodorant ad)

I saw an ad on tv last night for Mitchum deodorant that showed big text on the screen that said "OXYGEN eliminates all odors!" or something similar. Their website indeed claims "Our exclusive formula ...
7
votes
1answer
138 views

Are there any significant industrial processes that use liquid ammonia as a solvent?

There are some interesting laboratory reactions that use liquid ammonia as a solvent (for example, the Birch Reduction where an alkali metal is dissolved in liquid ammonia). There have also been some ...
0
votes
1answer
126 views

Wax and oil polish on wood

Wood countertops are frequently sealed, when a non-hardening, food-safe finish is desired, with some magic cocktail of waxes and oils. Typical components might include mineral oil, beeswax, and ...

1
2