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What is the value of pKw?
pKa+pKb=pKw=14
What is the pH if pKw is 14.26?
I will assume you are asking about the pH of pure water if pKw is 14.26. The relationship between pH, pOH, and pKw is as follows: pH + pOH = pKw. If it is pure, neutral water (no acids or bases present), then pH = pOH, so: pH + pOH = 14.26 2(pH) = 14.26 pH = pOH = 7.13
How do you say red car in German?
red car = rotes Auto red car = roter Wagen red car = roter PKW
Where is the On The Chisholm Trail Association in Duncan Oklahoma located?
The address of the On The Chisholm Trail Association is: 1000 Chisholm Trail Pkw, Duncan, OK 73533-1539
Where can I find an industrial mixing equipment?
http://www.alfalaval.com/campaigns/tankequipment/mixing-and-agitation/product-overview/pages/product-overview.aspx?pkw=industrial%20mixing%20equipment is a website that you can find an industrial mixing equipment.
Calculate the pH of a 0.028 m NACN solution Ka 4.9 x 10 -10. the answer is 10.88 please help?
This is a weak base problem. Assume F = 0.028M Ka = 4.9 10^-10 Kb = Kw / Ka Kw - 10^-14 therefor pKw=14 x = [OH-] Kw / Ka = Kb = x^2 / (F-x) solve for "x" by use of quadratic formula to get the [OH-] pOH = -log [OH-] then plug pOH into the pH equation pH =pKw - pOH
Is it true that the sum of pka and pkb is always equal to 14 at all temperature for any acid?
No it is not true because value of pkw changes with change of temperature. It's value is 14 at 250C and less at high temperature
How do you use pka to find the pH value?
PKa = -log Ka so if you multiply across by -1 and then taking the antilog you can get Ka Ka.Kb = Kw where Kw = 1.0 x 10^14 PKa + PKb = PKw = 14 that should give you a start.
How many times more hydroxide ions are there in a solution with a pH than in a solution with a pH of 3?
The concentration of hydroxide ion is realted to pH by the pKw (10-14) At pH 9 the concentration of OH- is 10-5, at pH 3, 10-11. The ratio is 106 so there are a million times as many OH- in pH 9.
How many more hydroxide ions are there in a solution with a pH of 9 than in a solution with a pH of 3?
The concentration of hydroxide ion is realted to pH by the pKw (10-14) At pH 9 the concentration of OH- is 10-5, at pH 3, 10-11. The ratio is 106 so there are a million times as many OH- in pH 9.
How many times more hydroxide ions are in a solution with a pH of 9 than in a solution with a pH of 3?
The concentration of hydroxide ion is realted to pH by the pKw (10-14) At pH 9 the concentration of OH- is 10-5, at pH 3, 10-11. The ratio is 106 so there are a million times as many OH- in pH 9.
Why is water known as an acid as well as base?
Because water molecules can both split off and accept a proton H+ :H2O + H+ ---> H3O+ (hydroxonium ion)H2O ---> H+ + OH- (hydroxide ion)This is called the 'Water equilibrium of internal protolysis: 2H2O OH- + H3O+ pKw = 14 or Kw = [H3O+]*[OH-] = 10^(-14)
