High level inorganic compounds quiz

Answer: 1 + 2

Fluorine reacts with water much different than the other halogens, 2*F2 + 2*H2O = 4*HF + O2 .

Answer: H2SO5

This acid is called peroxomonosulphuric acid, for it contains a peroxidic bond. Structure is similar to that of sulfuric acid; one -OH group is substituted with an -O-OH group.

Answer: True

This is an unique property of helium; at low temperature, helium transforms into a red liquid (called He II) with unusual conductivity and viscosity properties.

Answer: True

Some complex molybdenum compounds contain quadruple Mo-Mo bonds(e.g. Mo2Cl4(L-L)2 and Mo2Cl6(L-L)2, where L-L is a bidentate phosphine ligand).

Answer: False

The weight of a given volume of a gas mixture is given by the medium molecular weight of this mixture which can be calculated using the formuala : M = Óni*Mi where ni = the proportion of gas i in the mixture, and Mi is the molecular weight of gas i. Air's molecular weight (calculated using this formula) is 28.9 g/mol. If we add water vapors to such mixture, the molecular weight of the mixture will decrease (since the Molecular weight of water is smaller than air's). Thus, the wet air will be lighter.

Answer: True

Naphthalene reacts with sodium (and other metals) to form ionic compounds. (e.g. Na(+)NAPHTA(-). where NAPHTA = naphthalene)

Answer: ICl7

ICl7 does not exist; the volume of the iodine atom is too small for it to be surrounded by 7 chlorine atoms.

Answer: False

Silver reacts with NaCN in alkaline solutions, to form Na[Ag(CN)2]

Answer: RnCl2

RnCl2 is an ionic compound. Electrolysis of RnCl2 will give gaseous Rn and chlorine.

Answer: False

The chlorine solution is has a much lower pH value, than the iodine solution; thus, it is more acid. CO2 is much more soluble in alkaline and neutral solutions than in acid solutions.