maggie43
maggie43
03-03-2017
Chemistry
contestada
A solution with pH of 9 has [OH-] concentration of
Respuesta :
TSO
TSO
10-03-2017
pH = -log([H+])
[H+] = 10^(-pH)
[H+] = 10^(-9)
[H+][OH-] = Kw
Kw = 1.0*10^-14 at 25 degrees celsius.
[OH-] = Kw/[H+] = (1.0*10^-14)/(1*10^-9) = 1.0*10^-5
The concentration of OH- ions is
1.0*10^-5 M
.
Answer Link
VER TODAS LAS RESPUESTAS ( 98+ )
Otras preguntas
An atom of lithium-7 has an equal number of (1) electrons and neutrons (2) electrons and protons (3) positrons and neutrons (4) positrons and protons
Which terms best describe Kublai Khan? A. spiritualist and priest B. conqueror and builder C. astronomer and mathematician D. teacher and poet
For a given chemical reaction, the addition of a catalyst provides a different pathway that(1) decreases the reaction rate and has a higher activation energy (2
Which statement explains why neon is a Group 18 element? (1) Neon is a gas at STP.(2) Neon has a low melting point. (3) Neon atoms have a stable valence electr
what phrase best defines dialect 1. the set of slang terms in a language 2.a manner of conversation that contains no idioms 3. rules relating spelling and pronu
A current of 120 mA flows past a point in a circuit for 25 s. How much charge passes the point in this time? How many electrons pass the point in this time?
The exchange rate is £1 =$1.54 how many $ would I get for £200
Geopolitics play an important role in the Middle East today because of its (1) fertile soil and favorable climate for cash crops (2) navigable rivers and diamon
a book sits at the top of a bookshelf is this question kinetic or potential energy
Which Group 14 element is classified as a metal? (1) carbon (3) silicon (2) germanium (4) tin
