chapter 10 chem
What is the [OH-] in a solution that has a [H3O+] = 2.0 × 10-4 M?
5.0 × 10-11 M
neutralization reaction
A chemical reaction in which an acid and a base interact with the formation of a salt. *an acid and a base react to form a salt and water.
Neutralization :
A neutralization occures when an acid reacts with a base. The result is a salt and water : HCL + NaOH NaCl + H2O
buffer
A solution that minimizes changes in pH when extraneous acids or bases are added to the solution.
Arrhenius theory of acids and bases :
Acid is a substance that produces H+ ions ( protons) when it is dissolved in water.Base is a substance that produces OH- ions when it is dissolved in water. These procces is called ionization or dissociation
What is the pH of a solution with [H3O+] = 3.0 × 10-3 M?
Best Answer: [H+]= - log 3.0 x 10^-3=2.52
Measuring concentration of H + or OH-: Molarity is number of mole per liter, we use this term to express concentration of H+ or OH-. Dissociation of water : H2O H+ + OH- [H+] [OH-] = 10 -14 [ ] = molarity
Example : What is the concentration of H+ and OH- in a solution contain 10 -8 of H3O+ ? Dissociation of acids in water : HCl + H2O H3O+ + Cl- H3O+ = H+= 10-8 [10-8] [OH-] = 10-14 OH = 10 -14/ 10 -8 = 10 -6
What is the pH of a solution with [OH-] = 1 × 10-4 M?
First find the [H+] [H+]=(1x10^-14)/(1x10^-4) now take the value you found for [H+] and plug it into the equation: pH=-log[H+] you should get 10
Naming oxyacids : root name of nonmetal + (ic or ous) + acid
H2SO4 sulfuric acid H2SO3 sulfurous acid
HCl
Hydrochloric Acid is a strong acid
Which of the following statements correctly describes the hydronium-hydroxide balance in the given solution?
In bases, [oh- ] is greater than [h30+ ].
Bases : NaOH, Ca(OH)2, Al(OH)3
They contain one metal and OH group.
The pH of 0.001 M HCl is...
We know that "pH = -log (H+)" If the concentration of HCl is 0,001M the concentration of H+ is also 0,001M. So "-log 0,001 = 3". The answer is 3.
Best Answer: pH=log (1/10^-9)= pH=log 10^9 pH=9
What is the pH of a solution with [H3O+] = 1 × 10-9 M
According to the Arrhenius concept, if NaOH were dissolved in water, it would act as
base (releases OH-)
Ther are two kind of the acids : Binary acids : They contain hydrogen and one nonmetal: HCl, HF, HBr, HI, H2S,... Dissociation for binary acids : HCl H+ + Cl- H2S H+ + HS - HS- H+ + S 2-
binary acid and oxyacid
base characteristics
have a bitter taste, feels slippery. (many soaps contain bases)
calculate pH
pH=-log[H+]
NaOH, strong base
sodium hydroxide
What is the pH of a solution with [OH-] = 2.0 × 10-10 M?
take the negative base 10 log of that number and subtract from 14 4.3
