koh Definition and 11 Threads

Hoping to get my assumptions and math verified here. We have a process that requires 42 lbs of dry flake KOH (90% purity). Looking to find the equivalent volume (liters) of 45% liquid KOH (11.1 molar strength) - being extracted from a 55 gallon drum. 1 liter of liquid KOH has 11.1 x 56...

Hi everyone, I'm new on this forum, I make potassium soap but there were changes in the regulations in my country (Argentina) and now there's a lot of slow bureaucracy needed to buy chemicals like KOH (the regulations are industry-focused but are affecting small businesses like mine) so...

This is a quick question. My textbook lists the heat of solution of KOH as a negative number, and thus the solubility of KOH decreases as temperature is raised. Word for word, my book says "Negative heat of solution: The solute solubility decreases with rising solution temperature". But this...

Homework Statement Balance the following equation and write the corresponding ionic and net ionic equation (if appropriate): CH_{3}COOH _{(aq)}+ KOH _{(aq)} \rightarrow Homework Equations None as far as I know. The Attempt at a Solution I wrote: CH_{3}COOH _{(aq)}+ KOH...

How to precipitate aluminium hydroxide Al(OH)3 from potassium aluminate K2Al2O4 which is dissolved in potassium hydroxide KOH? Are there any seeding agents which could be used? What will be the resulting compound(s) (ions) of the reaction(s)? Alternatively other methods how to make aluminium...

Is it valid to express KOH in this way (see attached image)? I wasn't sure if structural formulae are applicable to ions. The single bond to me denotes a covalent bond, which isn't applicable to the ionic compound KOH, is it?

Homework Statement What is [H+] and pH for a 100 mM solution of KOH The Attempt at a Solution This seems very simple..its only 2 marks but I don't know what I'm doing wrong. I understand KOH will dissociate into K+ and OH- pOH=-log(OH) ? ph + pOH = 14 p[OH]=-log[100x10^-6?]...

Sorry if this is a dumb question but I'm an ME and am only now starting to get a grip on chemistry. If I have ruby (Cr:Al2O3) in a humidified air environment that contains KOH, my limited chemistry knowledge tells me that the alkali, KOH, will react with the ruby. However, I can't figure out...

Homework Statement Consider the titration of 20.0mL of a 0.100 M solution of HBrO, a weak acid (Ka=2.5x10-9) with 0.200 M KOH. Calculate the pH of the following volumes of KOH. a. 0.00mL b. 5.00mL c. 10.00mL d. 30.00mL Homework Equations pH=pKa +log [base]/[acid] The Attempt...

Question: Calculate the change in pH of a 0.400 M C6H5COOH solution when 100.0 ml of a 2.50 M KOH solution is added to 1.000 L of C6H5COOH. For C6H5COOH, Ka = 6.46 X 10^-5. Work Done So Far: We're to determine the change in pH, thus we'll need to find the original pH. Ka = 6.46 X...

I work in a restauant and use KOH and NaOH as degreasers. Will these damage our septic system if I put them down the drain? Would it be better to send them to the landfill? Is one less harmful to the environment than the other? Personally I use them as spareingly as possible but I know...