CHEM1406 chapter 6 homework

ammonium oxide Express your answer as a chemical formula

(NH4)2O

A covalent compound is composed of a nitrogen atom, a hydrogen atom, and a carbon atom. How many electrons should the Lewis structure of the covalent compound contain?

10

silver chloride Express your answer as a chemical formula.

AgCl

aluminum chlorate Express your answer as a chemical formula.

Al(ClO3)3

gold(I) sulfate Express your answer as a chemical formula.

Au2SO4

Write the chemical formula for hexaboron silicide.

B6Si

What is the formula for barium chloride?

BaCl2; One Ba2+ ion has a charge of +2. Two Cl− ions have a total charge of 2(−1)=−2.

Dispersion forces only

C2H6, C5H12

carbon tetrachloride

CCl4

carbon dioxide

CO2

calcium bicarbonate Express your answer as a chemical formula.

Ca(HCO3)2

calcium nitride Express your answer as a chemical formula.

Ca3N2

CrCl3 Express your answer as an ion.

Cr3+

Chromium(II)

Cr3P2, CrO, CrBr2

chromium(II) bromide Express your answer as a chemical formula.

CrBR2

Chromium(III)

CrI3, Cr2S3, CrN

copper(I) phosphide Express your answer as a chemical formula.

Cu3P

What is the name of the molecular compound N2O5?

Dinitrogen pentoxide

What is the formula for iron(III) oxide?

Fe2O3; Two Fe3+ ions have a total charge of 2(+3)=+6. Three O2− ions have a total charge of 3(−2)=−6.

magnesium Express your answer as an ion.

Mg2+

dinitrogen tetroxide

N2O4

The hydrides of group 5A are NH3, PH3, AsH3, and SbH3. Arrange them from highest to lowest boiling point.

NH3, SbH3, AsH3, PH3

What is the molecular formula for ammonium nitrate?

NH4NO3

NaCl Express your answer as an ion.

Na+

sodium Express your answer as an ion.

Na+

sodium nitrite Express your answer as a chemical formula.

NaNO2

Ni2S3 Express your answer as an ion.

Ni3+

oxygen Express your answer as an ion.

O2−

phosphorus trifluoride

PF3

lead(IV) oxide Express your answer as a chemical formula.

PbO2

hexasulfur dioxide

S6O2

selenium Express your answer as an ion.

Se2-

SeO2, a red colorant

Selenium dioxide

tin(II) sulfide Express your answer as a chemical formula.

SnS

Enter a name for SrCO3. Spell out the full name of the compound.

Strontium carbonate

Electrons of covalent compounds may be shared between atoms; T/F?

True

For a neutral molecule, the number of electrons in the Lewis structure is the sum of the valence electrons for the atoms; T/F?

True

ZnO Express your answer as an ion.

Zn2+

Al(ClO2)3.

aluminum chlorite

Al2(SO4)3, an antiperspirant Spell out the full name of the compound.

aluminum sulfate

Name (NH4)2S: Spell out the full name of the compound.

ammonium sulfide

What is the name of the ionic compound BaCO3?

barium carbonate

Ba(OH)2, a component of antacids

barium hydroxide

Enter a name for Ba3(PO4)2. Spell out the full name of the compound.

barium phosphate

Name Ba3(PO4)2:

barium phosphate

CaCO3, an antacid Spell out the full name of the compound.

calcium carbonate

Name Ca(OH)2:

calcium hydroxide

What is the name of the molecular compound CCl4?

carbon tetrachloride

4. When considering chlorine and iodine,_______ is more electronegative because it appears higher in the same group of the periodic table.

chlorine

Name the ionic compound CuNO3

copper (I) nitrate

Enter a name for N2O3. Spell out the full name of the compound.

dinitrogen trioxide

Each atom of a Lewis structure must have eight electrons; T/F?

false

Hydrogen atoms are often the central atom of a Lewis structure;T/F?

false

Name the ionic compound FeBr3.

iron (III) bromide

Enter a name for FePO3. Spell out the full name of the compound.

iron (III) phosphite

Enter a name for Pb(C2H3O2)2. Spell out the full name of the compound

lead (II) acetate

MgSO4 (Epsom salts)

magnesium sulfate

A polyatomic ion comprises a group of atoms that carry an overall charge. There is no easy way to learn the names of polyatomic ions. Memorizing the most common ones is important.

Formula Name NH4+ ammonium NO3− nitrate SO42− sulfate CO32− carbonate PO43− phosphate ClO3− chlorate

Dispersion forces, dipole-dipole forces, and hydrogen bonding

H2O, CH3OH

Rank the molecules from highest boiling point to lowest boiling point. To rank items as equivalent, overlap them

H2O, HCl, H2; Strong intermolecular forces tend to result in liquids and solids at room temperature (high melting and boiling points), while weak intermolecular forces tend to result in gases at room temperature (low melting and boiling points).

Dispersion forces and dipole-dipole forces

HCHO

Choose the molecular shape for the following description: a molecule with a central atom that has two electron groups and two bonded atoms.

linear

Li2CO3, an antidepressant Spell out the full name of the compound.

lithium carbonate

Mg(OH)2, a laxative Spell out the full name of the compound.

magnesium hydroxide

Name Mg(NO3)2: Spell out the full name of the compound.

magnesium nitrate

3. When considering both carbon and oxygen, ______ is more electronegative because it appears further to the right in the same period of the periodic table.

oxygen

Enter a name for PCl3.

phosphorus trichloride

1. Electronegativity values increase from left to right across a period in the periodic table because there is an increase in the _______charge of the nuclei in this direction.

positive

K2CO3 (a diuretic)

potassium carbonate

Name the ionic compound K2S.

potassium sulfide

2. These values also increase from the bottom to the top of a group because the size of the atom decreases, resulting in a ______ distance between the nucleus and the valence electron shell, which increases the attraction between the protons and electrons.

smaller

Na3PO4, a laxative

sodium phosphate

What is the name of the molecular compound SF6?

sulfur hexafluoride

Predict the molecular shape for SiF4.

tetrahedral

Predict the molecular shape for SO3.

trigonal planar