Acids, Bases & Salts Flashcards
acids taste?
base taste?
turn blue & red litmus?
do acids & bases aqueous solutions conduct electricity?
write the equation for self ionization of water.
sour
bitter
turns red
turns blue
yes
state the theory of Svante? give 2 examples.
acids are substances that ionize (break off) in water to produce hydrogen (H+) ions & base ionizes in water to produce OH- ions
Arrhenius
state Bronsted-Lowery theory?
give 2 examples.
an acid is a proton donor and a base is a proton acceptor.
Acid is a proton ______.
Base is a proton ______.
Donor
Acceptor
all bases in Bronsted Lowery except OH- are not Arrhenius bases?
amphoteric?
hydronium ion?
OH- ion?
true
a substance that has the ability to act either as an acid or a base.
H3O+ when H2O accepts proton
when H2O donates a proton
what is Lewis theory?
give 2 examples.
a Lewis acid accepts a pair of electron to form a coordinate covalent bond.
a Lewis base donates a pair of electron to form a coordinate covalent bond.
how is coordinate covalent bond formed between acid and base?
an acid atom lacks electrons so can accept electron pair
a base atom has complete octet having one or more unshared electron pairs that’s why base can donate an unshared electron pair.
how to indentify Lewis acids & Lewis bases?
pg 25
Non-metals form ________.
non metallic oxides are _____ in character?
acids _____ electrons.
anions
acidic
gain/accept
as non metals accept electrons so non metallic oxides are acidic in charcter cz acids accept electrons cz non metal oxides dissolve in water to form acids.
state the formula of self ionization of water?
y is water neutral?
write equili. constant expression for self ionization of water?
why the conc. of water will remain constant?
H2O= H+ (aq) + OH- (aq)
[H+] = [OH-]= 1 x 10-7 M
Kc = [H+] [OH-]/ [H2O]
pg 10
what ionic product of water at 25 degrees?
define pH?
Kw= [H+] [OH-] this is formula
Kw=Kc [H2O]
Kw= 1 x 10^-14 at 25 C
pH is defined as the -ve log of the molar conc. of H+ ions in aqueous solutions
pH= -log [H+]
how is pH of water 7?
Kw= 1 x 10^-14 at 25 C
what does it tell us and importance of it?
in any aqueous solution at 25°C no matter what does it contain, the product of H+ Ion conc. & OH- conc. is always = 1 x 10^-14
even if H+ increases OH- will decrease to make the product equal.
what if one product increases?
what does equilibrium constant tell us?
explain ionic product simply?
it indicates the ratio of the concentrations of products to reactants at equilibrium for a given chemical reaction.
it’s just the product of conc. of H+ & OH- ions
acid & base turn _____ litmus paper ______.
what are indicators?
acid turns blue litmus red & a base turns red litmus blue.
chemical organic compound that changes its colour within small pH range & indicate the pH of unknown solution by the color.
