1. Which of the following is NOT true about equivalence point and endpoint? a.The endpoint is marked by a sharp change in physical property of a solution. b.The endpoint is reached when the reactants are stoichiometrically equivalent. c. The endpoint approximates the equivalence point. d.The endpoint coincides or nearly coincides with the equivalence point. 2. Which of the following is/are TRUE about equivalence and end points? I. The end point of a titration is reached when the titrant and analyte are stoichiometrically equal. II. When you are titrating a strong or weak acid with a strong base, the end point will always be faint pink using a phenolphthalein indicator. III. When you are titrating a strong or weak acid with a strong base, the volume needed to reach the end point will always be lower than that of the equivalence point. a. II only b. I and III c. I, II and III d. III only 3. Which of the following is CORRECTLY matched? Select one: a. Fe3+ with NaSCN: blood-red solution b. Cu2+ with excess NH3: deep blue precipitate c. Zn2+ with K4[Fe(CN)6]: white precipitate d. Ca2+ with NaC2O4: yellow precipitate
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. Which of the following is NOT true about equivalence point and endpoint?
a.The endpoint is marked by a sharp change in physical property of a solution.
b.The endpoint is reached when the reactants are stoichiometrically equivalent.
c. The endpoint approximates the equivalence point.
d.The endpoint coincides or nearly coincides with the equivalence point.
2.
Which of the following is/are TRUE about equivalence and end points?
I. The end point of a titration is reached when the titrant and analyte are stoichiometrically equal.
II. When you are titrating a strong or weak acid with a strong base, the end point will always be faint pink using a phenolphthalein indicator.
III. When you are titrating a strong or weak acid with a strong base, the volume needed to reach the end point will always be lower than that of the equivalence point.
3. Which of the following is CORRECTLY matched?
d. Ca2+ with NaC2O4: yellow precipitate
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