Acid and base behavior can be observed in solvents other than water. One commonly used solvent is dimethhylsulfoxide (DMSO), which can be treated as a monoprotic acid “HSoI.” Just as water can behave either as an acid or a base, so HSoI can behave either as a Bronsted—Lowry acid or base. (a) The equilibrium constant for self-dissociation of HSoI (call it K H S o l ) 1 × 10 − 35 . Write the chemical equation for the sell-dissociation reaction and the corresponding equilibrium equation. (Hint: The equilibrium equation is analogous to the equilibrium equation for in the case of water.) (b) The weak acid HCN has an acid dissociation constant K a = 1.3 × 10 − 13 in the solvent HSoJ. If 0.010 mol of NaCN is dissolved in 1.00 L of HSoI, what is the equil ibrium concentration of H 2 Sol?
Acid and base behavior can be observed in solvents other than water. One commonly used solvent is dimethhylsulfoxide (DMSO), which can be treated as a monoprotic acid “HSoI.” Just as water can behave either as an acid or a base, so HSoI can behave either as a Bronsted—Lowry acid or base. (a) The equilibrium constant for self-dissociation of HSoI (call it K H S o l ) 1 × 10 − 35 . Write the chemical equation for the sell-dissociation reaction and the corresponding equilibrium equation. (Hint: The equilibrium equation is analogous to the equilibrium equation for in the case of water.) (b) The weak acid HCN has an acid dissociation constant K a = 1.3 × 10 − 13 in the solvent HSoJ. If 0.010 mol of NaCN is dissolved in 1.00 L of HSoI, what is the equil ibrium concentration of H 2 Sol?
Solution Summary: The author explains that the equilibrium equation for self-dissociation reaction needs to be determined.
Acid and base behavior can be observed in solvents other than water. One commonly used solvent is dimethhylsulfoxide (DMSO), which can be treated as a monoprotic acid “HSoI.” Just as water can behave either as an acid or a base, so HSoI can behave either as a Bronsted—Lowry acid or base.
(a) The equilibrium constant for self-dissociation of HSoI (call it
K
H
S
o
l
)
1
×
10
−
35
.
Write the chemical equation for the sell-dissociation reaction and the corresponding equilibrium equation. (Hint: The equilibrium equation is analogous to the equilibrium equation for in the case of water.)
(b) The weak acid HCN has an acid dissociation constant
K
a
=
1.3
×
10
−
13
in the solvent HSoJ. If 0.010 mol of NaCN is dissolved in 1.00 L of HSoI, what is the equil ibrium concentration of H2Sol?
CH3CH2CO2H , Ką = 1.3 x 105
CH3CH2CO2 , Kp = 7.7 x 10-10
F, Kp = 1.4 x 10-11
HF , Ką = 7.2 x 10-4
For the reaction between propanoic acid (CH3CH2CO2H) and a solution containing fluoride ions (F"):
(a) The name of the conjugate base produced is
(b) The name of the conjugate acid produced is
(c) The reaction is
favoured (write 'reactant' or 'product'), because the reactants are the
(write 'weaker' or 'stronger') set of
acid and base.
3c.) Suppose it is desired to maintain the pH of a solution at 4.2 using only acetic acid and sodium acetate. Would the concentration of acetic acid or sodium acetate have to be higher in the solution?
O sodium acetate
O acetic acid
Sodium hypochlorite solution is also known as bleach. It contains the hypochlorite ion ClO-.
(a) Write an equation for the reaction between hypochlorite ion and ammonium ion. Label the acids and bases in the forward and reverse reactions. Identify the two conjugate acid-base pairs.
(b) This equilibrium favors the reactants. Which of the acids is stronger and donates protons more readily?
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell