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Pure water has a pH of 7.00. 1.1g of MgBr2 is added to 15L of pure water. The…

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Wize University Chemistry Textbook > Acids and Bases

Conjugate Acid-Base Pairs

2 Activities

Wize University Chemistry Textbook > Acids and Bases

Salts

6 Activities

Pure water has a pH of 7.00. 1.1g of MgBr2 is added to 15L of pure water. The solubility of MgBr2 in water is approximatly 101.5g/L. What is the pH of the resulting solution?
More Conjugate Acid-Base Pairs Questions:
In a reaction, which of the following could be conjugate acid-base pairs?
Weak Acids and Bases
Will HCO3- act as an acid or as a base?
Weak Acids and Bases
Sulfurous acid (H2SO3) is a diprotic weak acid (pKa1 = 1.85, pKa2 = 7.20). Bisulfite (HSO3-) is the conjugate base of sulfurous acid and is an amphoteric species (can act as an acid or a base). Will HSO3- act as an acid or as a base?
In the reaction HSO4−(aq) + OH−(aq) ⇌ SO42−(aq) + H2O (l)HSO_4^-\left(aq\right)\ +\ OH^-\left(aq\right)\ ⇌\ SO_4^{2-}\left(aq\right)\ +\ H_2O\ \left(l\right) the conjugate acid-base pairs are
Select which of the following WOULD NOT be a conjugate acid/base pair.
Consider the weak bases below and their Kb values:
C6H7O Kb = 1.3 x 10-10
C2H5NH2 Kb = 5.6 x 10-4
Consider the following reaction:
NH4++OH−⇌H2O+NH3NH^{4+}+OH^-\rightleftharpoons H_2O+NH_3
Choose the INCORRECT statement
Using the incomplete reaction below, choose the completed equilibrium which indicates the correct association of conjugate acid base pairs.
HCl+H2O⇌\rm HCl\quad+\quad H_2O\quad \xrightleftharpoons{\hspace{1.5cm}}
**#1 and #2 designate the two sets of conjugate acid base pairs present in each equilibrium**
Consider the weak bases below and their Kb values:
C6H7OKb=1.3×10−10C_6H_7O \hspace{48pt}K_b=1.3 \times 10^{-10}
C2H5NH2Kb=5.6×10−4C_2H_5NH_2 \hspace{30pt}K_b=5.6 \times 10^{-4}
In the reaction HSO4(aq)−+OH(aq)−⇌SO4(aq)2−+H2O(l)HSO^-_{4(aq)}+OH^-_{(aq)} \rightleftharpoons SO^{2-}_{4(aq)}+H_2O_{(l)}the conjugate acid-base pairs are
To 2L of pure water is added Mg(ClO4)2. What would the effect on pH be?
Triemethylamine (N(CH3)3) is a base (pKb=4.19) used in a variety of organic reactions. It can also be used as an effective Lewis base due to it's small steric profile.
if a solution of [N(CH3)3H]2[SO4]is dissolved in neutral water the pH will be,
A series of solutions are formed with strontium salts of the form SrX2 where X=F, Cl, Br, I.
Which of the solutions will have the highest pH?
Using the incomplete reaction below, choose the completed equilibrium which indicates the correct association of conjugate acid base pairs.
HCl+NH3⇌\rm HCl\quad+\quad {NH_3}\quad \xrightleftharpoons{\hspace{1.5cm}}
**#1 and #2 designate the two sets of conjugate acid base pairs present in each equilibrium**
Using the incomplete reaction below, choose the completed equilibrium which indicates the correct association of conjugate acid base pairs.
+CH3COOH⇌H2O+Na+CH3COO−\rm \quad+\quad {CH_3COOH}\quad \xrightleftharpoons{\hspace{1.5cm}}\quad H_2O\quad+\quad Na^+CH_3COO^-
**#1 and #2 designate the two sets of conjugate acid base pairs present in each equilibrium**
Acids and Bases: Conjugate
In each equation, label the acids, bases and conjugate acid-base pairs
NH3+H3PO4↔NH4++H2PO4−NH_3+H_3PO_4 \leftrightarrow NH^+_4+H_2PO^-_4
CH3O−+NH3↔CH3OH+NH2−CH_3O^-+NH_3 \leftrightarrow CH_3OH+NH^-_2
Using the incomplete reaction below, choose the completed equilibrium which indicates the correct association of conjugate acid base pairs.
HCl+H2O⇌\rm HCl\quad+\quad H_2O\quad \xrightleftharpoons{\hspace{1.5cm}}
**#1 and #2 designate the two sets of conjugate acid base pairs present in each equilibrium**
Acids and Bases: Conjugate
Using the data in the table, which of the conjugate bases below is the strongest base?
AcidKaHOAc1.8×10−5HCHO21.8×10−4HClO3.0×10−8HF6.8×10−4\def\arraystretch{1.5} \begin{array}{c} \hline \rm Acid &&&K_a\\ \hline HOAc&&&1.8 \times 10^{-5}\\ HCHO_2&&&1.8 \times 10^{-4}\\ HClO &&& 3.0 \times 10^{-8}\\ HF &&& 6.8 \times 10^{-4}\\ \hline \end{array}
Acids and bases: Conjugate identification
In the reaction HSO4-(aq) + OH-(aq) ⇌ SO42-(aq) + H20(l), the conjugate acid-base pairs are:
B is a weak base. Which equilibrium corresponds to the equilibrium constant Ka for HB+?
Acids and Bases: Conjugate Acid-base Pairs
Indicate how many of these combinations are conjugate acid-base pairs. Select all that apply.
More Salts Questions:
If a strong base is mixed with an equally but oppositely strong acid, what is the relative pH of the resulting salt?
Explain whether an aqueous solution of each of these salts is acidic, basic or neutral:
KBr,
NH4Cl,
Acids and Bases: Identifying Acidic and Basic Salts
Consider four different aqueous salt solutions, each of which has an initial concentration of 0.100 M and undergoes complete dissociation to its ions. For each solution (each row),
Identify any ions produced which act as acids or bases.Omit any ion that does not act as either an acid or base. You may leave boxes empty if no ions meet that description.
Classify the solution pH as overall acidic, basic or neutral:
Explain whether an aqueous solution of each of these salts is acidic, basic or neutral:
KBr,
NH4Cl,
Acids and Bases: pH of Salt Solutions
If each of the following salts are dissolved in water, determine if the pH will be >7, <7 or =7.
a) KBr
b) Na3PO4
Salts
Determine whether the following salts, when dissolved in water, will have a pOH > 7, pOH < 7 or a pOH = 7 (Enter your answers as: >7, <7 or =7
Strength of Acids and Bases
Will the following salts, when dissolved in water, result in an acidic, basic or neutral solution?
Strength of Acids and Bases
Will the following salts, when dissolved in water, result in an acidic, basic or neutral solution?
Which one of the following salts will form a neutral solution on dissolving in water?
A series of solutions are formed with strontium salts of the form SrX2 where X=F, Cl, Br, I.
Which of the solutions will have the highest pH?
Acids and Bases: Salt
Is an aqueous solution of each of these salts acidic, basic or neutral?
Which one of the following salts will form a neutral solution on dissolving in water?
Practice: Salts of acids and bases
Consider four different aqueous salt solutions, each of which has an initial concentration of 0.100 M and undergoes complete dissociation to its ions. For each solution (each row),
identify any ions produced which act as acids or bases. If no ions meet that description, enter "DNE" (does not exist) inside the box
classify the solution pH as overall acidic, basic or neutral: