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.
31. Which is a monoprotic acid?
A. H2CO3 B. HNO3 C. H2SO4 D. H3PO4
32. Which of the following is INCORRECT?
A. CH3COOH H+ + CH3COO- C. H2O H+ + O2-
B. HF H+ + F- D. C2HO4- H+ + C2O42-
33. Weak acids are electrolytes. Vinegar is a weak electrolyte.
A. Only the first statement is correct. C. Both statements are correct. B. Only the second statement is correct. D. Both statements are incorrect.
34. The H+ ion concentration in a bottle of wine is 4.1 X 10-4 M. What is the pH of the wine?
A. 2.64 B. 3.39 C. 4.1 D. 5.5
35. What is the oxidation number of chlorine in HClO4?
A. +1 B. +6 C. +7 D. -8
36. How many electrons were lost/gained in the following
2K2Cr2O7 + 2H2O + 3S 4KOH + 2Cr2O3 + 3SO2?
A. 2 B. 3 C. 6 D. 12
37. In the reaction, Fe2+ + Cr2O72- Fe3+ + Cr3+, which is involved in oxidation?
A. Fe B. Cr2O7 C. Cr D. O
38. Which of the following half reactions in CORRECT?
A. I2 + 1e- I- B. Cu2+ + 2e- Cu+ C. Zn2+ + 2e- Zn D. 2H+ + 2e- H2-
39. The following are examples of spontaneous reactions EXCEPT
A. Water freezes spontaneously below 0ᵒC, and ice melts spontaneously above 0ᵒC. B. Heat flows from a colder one but reverse happens spontaneously.
C. A waterfall runs downhill, but never up spontaneously.
D. A lump of sugar spontaneously dissolves in a cup of coffee, but dissolved sugar does not spontaneously reappear in its original form.
40. For an equilibrium process, the free-energy change ∆G is
A. less than zero. B. greater than zero. C. equal to zero. D. equal to one.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
