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Chlorine and Halogens

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Which of the following free halogens CANNOT be prepared by the electrolysis of water solution of its salt?

A) F2
B) Cl2
C) Br2
D) I2
E) At2

Which one of the following has the smallest atomic radius?

A) Li
B) Cs
C) F
D) Na
E) Cl

Which of the following nonmetal oxides is paired with the acid which will result form the addition of water to the nonmetal oxide?

A) NO2 and HNO2
B) SO2 and H2SO4
C) P4O10 and H3PO3
D) Cl2O7 and HClO4
E) NO and HNO2

Aqueous solutions of which one of the following salts will give the most basic solution?

A) NaOCl
B) NaCl
C) NaClO2
D) NaClO3
E) NaClO4

All of the following are ways that hydrogen chloride can be produced EXCEPT

A) SiCl4 + 2H2O  SiO2 + 4HCl
B) CaCl2 + H2SO4  CaSO4 + 2HCl
C) H2 + Cl2 uv 2HCl
D) C2H6 + Cl2  C2H5Cl + HCl
E) KCl + H2O  KOH + HCl

DRAW the Lewis structure for chlorous acid.

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Which of the following free halogens CANNOT be prepared by the electrolysis of water solution of its salt?

A) F2
B) Cl2
C) Br2
D) I2
E) At2

All of these compounds exist in nature except for At2. All of the other elements are diatomic elements and will form the compounds. Astatine, however, is not diatomic and is radioactive and will decay as soon as it is formed.

Which one of the following has the smallest atomic radius?

A) Li
B) Cs
C) F
D) Na
E) Cl

Atomic radius increases as you go down the periodic table. Based on this, Li and F will have the smallest radii. Fluorine has more protons (9) pulling in on the electrons than lithium does (3) though, so it will have ...

Solution Summary

This solution explains a variety of multiple choice problems dealing with chlorine and halogens.

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For each method listed, indicate the mode of action, whether it is sporocidal, common uses, when it should not be used and any special advantages or disadvantages.

a. Phenol and penolics: bisphenolics and triclosan
b. Alcohols: isoopropanol and ethanol
c. Gaseous agents: ethylene oxide gas, chlorine dioxide gas
d. Halogens: chlorine, iodine, bromine, and flourine
e. Heavy Metals: arsenic, zinc, mercury, and silver
f. Surfactants: quaternary ammonium detergents, soaps
g. Oxidizing agents: hydrogen peroxide, ozone, and peracetic acid
h. Aldehydes: Glutaraldehyde and formaldehyde

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