Chemists.. Chime in! What can I do with Potassium Hydroxide? Phosphoric Acid?

Eli

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Oct 9, 1999
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So I found a 32oz bottle of 4N Potassium Hydroxide and a 8oz bottle of 4N Phosphoric Acid in the cellar..

What can I do with it? :D
 

MikeMike

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Feb 6, 2000
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4M or N??? (dunno what N means, but M would stand for molar. which is moles/l (moles is grams divided by amu of substance)

PO4 will prolly eat sum stuff. KOH wont do much from what i know,

now if it was AgNO3 (silver nitrate) you could turnurself brown for a week.

MIKE
 

Eli

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Oct 9, 1999
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Originally posted by: nourdmrolNMT1
4M or N??? (dunno what N means, but M would stand for molar. which is moles/l (moles is grams divided by amu of substance)

PO4 will prolly eat sum stuff. KOH wont do much from what i know,

now if it was AgNO3 (silver nitrate) you could turnurself brown for a week.

MIKE

They both say 4N. I assumed it stood for Nitrogen?
 

DAWeinG

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Aug 2, 2001
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Originally posted by: Eli
Originally posted by: nourdmrolNMT1
4M or N??? (dunno what N means, but M would stand for molar. which is moles/l (moles is grams divided by amu of substance)

PO4 will prolly eat sum stuff. KOH wont do much from what i know,

now if it was AgNO3 (silver nitrate) you could turnurself brown for a week.

MIKE

They both say 4N. I assumed it stood for Nitrogen?

N stands for Normality. I think normality means the molarity x number of protons transferred? Something to do with protons? *shrugs*
 

DAWeinG

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Aug 2, 2001
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Brain food:

Normality: There is a relationship between normality and molarity. Normality can only be calculated when we deal with reactions, because normality is a function of equivalents.

The example below uses potassium hydroxide (KOH) to neutralize arsenic acid. By studying the reaction it is possible to determine the proton exchange number to determine the normality of the arsenic acid.

Look at the equation H3AsO4 + 3KOH --> K3AsO4 + 3H2O:

Equivalent weight = molar mass/(H+ per mole)

Equivalent = mass of compound / Equivalent weight

And Normality = (equivalents of X)/Liter

And the part that is of interest to you is that Normality = molarity x n (where n = the number of protons exchanged in a reaction).

You probably remember that when a hydrogen atom is ionized and loses its electron, you are left with only a proton. So a hydrogen ion is basically a proton.

Let's assume that we have a 0.25 M solution of H3AsO4 and want to determine the normality of it if it participates in the reaction

H3AsO4 + 2KOH --> K2HAsO4 + 2H2O

When H3AsO4 is neutralized by KOH, H3AsO4 provides two protons to form 2H2O.

Note that H3AsO4 has three hydrogens, but K2HAsO4 only has one hydrogen. That means that 2 protons were exchanged,

Again normality = molarity * n

Remember that normality of the solution is 0.025 mol H3AsO4 and there were two protons exchanged (2 equivalents/mole)



So, in short, while there is a relationship between the normality of a solution and the molarity of a solution, the normality can only be determined by examining reaction, determining the proton exchange and multiplying molarity by that number.

Normality is particularly useful in titrations calculations.

Where N = normality, V = volume, a = the substance on the left of the equation involved in proton exchange, and b=substance on the right of the equation involved in proton exchange:

NaVa = NbVb

Percentages are easy to calculate because they do not require information about the chemical nature of the substance. Percentages can be determined as percent by weight or percent by volume.
 

CrazyPerson

Platinum Member
Jan 15, 2003
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one thing comes to mind.. but you need few other chemicals... SORRY, can not tell you... lets just say you can do alot of damage...
 

Eli

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Oct 9, 1999
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Originally posted by: DAWeinG
Brain food:

Normality: There is a relationship between normality and molarity. Normality can only be calculated when we deal with reactions, because normality is a function of equivalents.

The example below uses potassium hydroxide (KOH) to neutralize arsenic acid. By studying the reaction it is possible to determine the proton exchange number to determine the normality of the arsenic acid.

Look at the equation H3AsO4 + 3KOH --> K3AsO4 + 3H2O:

Equivalent weight = molar mass/(H+ per mole)

Equivalent = mass of compound / Equivalent weight

And Normality = (equivalents of X)/Liter

And the part that is of interest to you is that Normality = molarity x n (where n = the number of protons exchanged in a reaction).

You probably remember that when a hydrogen atom is ionized and loses its electron, you are left with only a proton. So a hydrogen ion is basically a proton.

Let's assume that we have a 0.25 M solution of H3AsO4 and want to determine the normality of it if it participates in the reaction

H3AsO4 + 2KOH --> K2HAsO4 + 2H2O

When H3AsO4 is neutralized by KOH, H3AsO4 provides two protons to form 2H2O.

Note that H3AsO4 has three hydrogens, but K2HAsO4 only has one hydrogen. That means that 2 protons were exchanged,

Again normality = molarity * n

Remember that normality of the solution is 0.025 mol H3AsO4 and there were two protons exchanged (2 equivalents/mole)



So, in short, while there is a relationship between the normality of a solution and the molarity of a solution, the normality can only be determined by examining reaction, determining the proton exchange and multiplying molarity by that number.

Normality is particularly useful in titrations calculations.

Where N = normality, V = volume, a = the substance on the left of the equation involved in proton exchange, and b=substance on the right of the equation involved in proton exchange:

NaVa = NbVb

Percentages are easy to calculate because they do not require information about the chemical nature of the substance. Percentages can be determined as percent by weight or percent by volume.
.....

Ok. ;)

Well, if I ever get any arsenic acid on me, I'll keep this in mind. :p
 

DigDug

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Mar 21, 2002
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Phosphoric Acid could be used in methamphetamine, through a couple steps I believe.

Potassium Hydroxide is an all-purpose base.
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
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Originally posted by: BlipBlop
Phosphoric Acid could be used in methamphetamine, through a couple steps I believe.

Potassium Hydroxide is an all-purpose base.
Hmmm.. lol.

Not interested in making amphetamine. :p
 

Eli

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Oct 9, 1999
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Originally posted by: fanerman91
You could mix them together and get a salt and water!

What kind of salt?

Isn't KOH a base? PO4 is obviously an acid.. what kinda reaction would they have? Should I mix some together? Will I blow up? :p
 

whaleskinrug

Golden Member
Sep 25, 2003
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Originally posted by: Eli
Originally posted by: fanerman91
You could mix them together and get a salt and water!

What kind of salt?

Isn't KOH a base? PO4 is obviously an acid.. what kinda reaction would they have? Should I mix some together? Will I blow up? :p

don't use it in an enema
 

Blackroot

Senior member
Oct 4, 2003
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Just gargle in your mouth, if it kills you o well, if it doesnt you just played like a version of russian rollet, if you don't wanna risk it, mix them together.
 

gururu

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Jul 16, 2002
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Neither chemical is THAT bad. Both can be disposed of safely in the environment so long as they are sufficiently neutralized. You can do this by diluting them out substantially, or by neutralizing them directly. Since you don't have a pH meter, I would do the following depending on my situation. Call hazmat at your local fire dept. and inquire about it or do this.
Add the KOH to a large vat of water (5 gallon or larger). Slowly add the phosphoric acid to the vat while mixing.

Once done, just dump the solution into the toilet. It will be very basic still, so wear gloves and pour it in between flushes.
 

Eli

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Oct 9, 1999
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Originally posted by: gururu
Neither chemical is THAT bad. Both can be disposed of safely in the environment so long as they are sufficiently neutralized. You can do this by diluting them out substantially, or by neutralizing them directly. Since you don't have a pH meter, I would do the following depending on my situation. Call hazmat at your local fire dept. and inquire about it or do this.
Add the KOH to a large vat of water (5 gallon or larger). Slowly add the phosphoric acid to the vat while mixing.

Once done, just dump the solution into the toilet. It will be very basic still, so wear gloves and pour it in between flushes.
I don't want to dispose of them, I want to do something fun with them! :D