Answer the a.b.c questions please. A. Which of the following statements is false:i) An exothermic reaction is always spontaneousii) An endothermic reaction is always spontaneousiii) The entropy of the universe is always increasingiv) Temperature can affect the solubility constant1. i and ii 2. i,iii3. i and iv4. iii and iv5. ii,iii,iv6. ii and ivB. Which of the following statements is true:i) NaOH is a weak baseii) Every strong base corresponds to a weak conjugate acidiii) HBr is a weak acidiv) A buffer solution contains a strong acid and its strong conjugate base.C. Among the following statements, identify those that have an influence on a system inequilibrium when the temperature is raised.i) In an exothermic reaction, the equilibrium favors the reactants.ii) In an exothermic reaction, equilibrium favors the resulting products.iii) In an endothermic reaction, the equilibrium favors the reactants.iv) In an endothermic reaction, the equilibrium favors the resulting products.v) A new equilibrium is established.Choice of answers:1. i, iv and v2. i, i and v 3. ii, iv and v 4. ii and iii5. i and iv

B. Which of the following statements is true: i) NaOH is a weak base ii) Every strong base corresponds to a weak conjugate acid iii) HBr is a weak acid iv) A buffer solution contains a strong acid and its strong conjugate base.

B. Which of the following statements is true: i) NaOH is a weak base ii) Every strong base corresponds to a weak conjugate acid iii) HBr is a weak acid iv) A buffer solution contains a strong acid and its strong conjugate base.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

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.

Question

Answer the a.b.c questions please.

A. Which of the following statements is false:
i) An exothermic reaction is always spontaneous
ii) An endothermic reaction is always spontaneous
iii) The entropy of the universe is always increasing
iv) Temperature can affect the solubility constant
1. i and ii 2. i,iii
3. i and iv
4. iii and iv
5. ii,iii,iv
6. ii and iv
B. Which of the following statements is true:
i) NaOH is a weak base
ii) Every strong base corresponds to a weak conjugate acid
iii) HBr is a weak acid
iv) A buffer solution contains a strong acid and its strong conjugate base.
C. Among the following statements, identify those that have an influence on a system in
equilibrium when the temperature is raised.
i) In an exothermic reaction, the equilibrium favors the reactants.
ii) In an exothermic reaction, equilibrium favors the resulting products.
iii) In an endothermic reaction, the equilibrium favors the reactants.
iv) In an endothermic reaction, the equilibrium favors the resulting products.
v) A new equilibrium is established.
Choice of answers:
1. i, iv and v
2. i, i and v 3. ii, iv and v 4. ii and iii
5. i and iv

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