1. Consider the following three statements about neutralisation reactions: I. A neutralisation reaction is a reaction between an acid and a base II. At the equivalence point of a neutralisation reaction the pH of the resulting solution will be 7 III. Salts are obtained from neutralisation reactions. Which statement or combination of statements is always correct? A. Only I and II B. Only I C. I, II and III D. Only I and III 2. Which of the following aqueous solutions has the highest [OH-]? A. pure water B. a 1 × 10-3 M solution of NH4Cl C. a solution with a pOH of 12.0 D. a solution with a pH of 3.0 E. a 1 × 10-4 M solution of HNO3 3. A is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A-? A. HA (aq) + H2O (l) ---> H2A+ (aq) + OH- (aq) B. A- (aq) + H3O+ (aq) ---> HA (aq) + H2O (l) C. A- (aq) + H2O (l) ---> HA (aq) + OH- (aq) D. HA (aq) + OH- (aq) ---> H2O (l) + H+ (aq)
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
1. Consider the following three statements about neutralisation reactions:
I. A neutralisation reaction is a reaction between an acid and a base
II. At the equivalence point of a neutralisation reaction the pH of the resulting solution will be 7
III. Salts are obtained from neutralisation reactions.
Which statement or combination of statements is always correct?
- A.
Only I and II
- B.
Only I
- C.
I, II and III
- D.
Only I and III
2.
Which of the following aqueous solutions has the highest [OH-]?
- A. pure water
- B.
a 1 × 10-3 M solution of NH4Cl
- C.
a solution with a pOH of 12.0
- D.
a solution with a pH of 3.0
- E.
a 1 × 10-4 M solution of HNO3
3.
A is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A-?
- A.
HA (aq) + H2O (l) ---> H2A+ (aq) + OH- (aq)
- B.
A- (aq) + H3O+ (aq) ---> HA (aq) + H2O (l)
- C.
A- (aq) + H2O (l) ---> HA (aq) + OH- (aq)
- D.
HA (aq) + OH- (aq) ---> H2O (l) + H+ (aq)
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