The 0 .80 M HNO 2 solution p H and parentage range has to be calculated Concept Information: Acid ionization constant K a : The equilibrium expression for the reaction HA ( a q ) → H + ( a q ) + A - ( a q ) is given below. K a = [ H + ][A - ] [ HA] Where K a is acid ionization constant, [ H + ] is concentration of hydrogen ion, [ A - ] is concentration of acid anion, [ HA] is concentration of the acid Base ionization constant K b The equilibrium expression for the ionization of weak base B will be, B ( a q ) + H 2 O ( l ) → HB + ( a q ) + OH - ( a q ) K b = [ HB + ] [ OH - ] [ B ] Where K b is base ionization constant, [ OH − ] is concentration of hydroxide ion, [ HB + ] is concentration of conjugate acid, [ B] is concentration of the base Relationship between K a and K b K a × K b =K w pH definition: The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale. The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration. pH = -log[H 3 O + ] p H Percentage Calculation: The percentage ionization is another method to assess acid strength For the reaction H A ( a q ) + H 2 O ( l ) ⇌ H 3 O ( a q ) + + A ( a q ) − % i o n i z a t i o n = [ H + ] e q m [ H A ] 0 × 100 Percent ionization relates the equilibrium H + concentration, [ H + ] e q m to the initial H A concentration [ H A ] 0
The 0 .80 M HNO 2 solution p H and parentage range has to be calculated Concept Information: Acid ionization constant K a : The equilibrium expression for the reaction HA ( a q ) → H + ( a q ) + A - ( a q ) is given below. K a = [ H + ][A - ] [ HA] Where K a is acid ionization constant, [ H + ] is concentration of hydrogen ion, [ A - ] is concentration of acid anion, [ HA] is concentration of the acid Base ionization constant K b The equilibrium expression for the ionization of weak base B will be, B ( a q ) + H 2 O ( l ) → HB + ( a q ) + OH - ( a q ) K b = [ HB + ] [ OH - ] [ B ] Where K b is base ionization constant, [ OH − ] is concentration of hydroxide ion, [ HB + ] is concentration of conjugate acid, [ B] is concentration of the base Relationship between K a and K b K a × K b =K w pH definition: The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale. The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration. pH = -log[H 3 O + ] p H Percentage Calculation: The percentage ionization is another method to assess acid strength For the reaction H A ( a q ) + H 2 O ( l ) ⇌ H 3 O ( a q ) + + A ( a q ) − % i o n i z a t i o n = [ H + ] e q m [ H A ] 0 × 100 Percent ionization relates the equilibrium H + concentration, [ H + ] e q m to the initial H A concentration [ H A ] 0
Solution Summary: The author explains the equilibrium expression for the ionization of weak base B.
Definition Definition State where the components involved in a reversible reaction, namely reactants and product, do not change concentration any further with time. Chemical equilibrium results when the rate of the forward reaction becomes equal to the rate of the reverse reaction.
Chapter 15, Problem 15.147QP
Interpretation Introduction
Interpretation:
The 0.80 MHNO2 solution pH and parentage range has to be calculated
Concept Information:
Acid ionization constantKa:
The equilibrium expression for the reaction HA(aq)→H+(aq)+A-(aq) is given below.
Ka=[H+][A-][HA]
Where Ka is acid ionization constant, [H+] is concentration of hydrogen ion, [A-] is concentration of acid anion, [HA] is concentration of the acid
Base ionization constantKb
The equilibrium expression for the ionization of weak base B will be,
B(aq)+H2O(l)→HB+(aq)+OH-(aq)
Kb=[HB+][OH-][B]
Where Kb is base ionization constant, [OH−] is concentration of hydroxide ion, [HB+] is concentration of conjugate acid, [B] is concentration of the base
Relationship betweenKaandKb
Ka×Kb=Kw
pH definition:
The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale.
The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.
pH=-log[H3O+]
pHPercentage Calculation:
The percentage ionization is another method to assess acid strength
Arrange the following compounds / ions in increasing nucleophilicity (least to
most nucleophilic)
CH3NH2
CH3C=C:
CH3COO
1
2
3
5
Multiple Choice 1 point
1, 2, 3
2, 1, 3
3, 1, 2
2, 3, 1
The other answers are not correct
0000
curved arrows are used to illustrate the flow of electrons. using the provided starting and product structures, draw the cured electron-pushing arrows for thw following reaction or mechanistic steps. be sure to account for all bond-breaking and bond making steps
Using the graphs could you help me explain the answers. I assumed that both graphs are proportional to the inverse of time, I think. Could you please help me.
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