Chemistry, 10.03.2020 17:37 8hoofs

Classify the following compounds as having covalent or ionic bondsa. dinitrogen trioxideb. carbon dioxidec. calcium chlorided. magnesium nitridee. sodium bromidef. aluminum oxide

Answers: 3

Show answers

Answers

Answer from: lasagnafoe

Compounds having covalent bonds are dinitrogen trioxide, carbon dioxide.

compounds having ionic bonds are calcium chloride, Magnesium nitride, sodium bromide, aluminum oxide.

Explanation:

When a positive charged cation gets bonded with negative charge anion by transferring its electrons the ionic bonds are formed. It is seen between metals and non-metals.

In covalent bonds the electrons are shared equally between two atoms. It is generally seen bonds between 2 non metals.

Dinitrogen trioxide : It is a covalent compound as bonding between two non metals is there ie nitrogen and oxygen.

In carbon dioxide carbon has four electrons in outermost shell which have strong attraction with nucleus cannot be lost neither it can accommodate 4 electrons to stabilize the valence shell. Thus sharing takes place and its covalent bonding.

In calcium chloride ionic bond is formed because calcium gives 2 electrons to each of the chloride atoms and thus gets 2+ charge on calcium. Sharing of electrons let the octet complete.

Magnesium nitride is formed when Mg loses 2 electrons to complete octet and nitride gains 3 electrons. The electrostatic attraction causes ionic bonding in it.

sodium bromide: Bromine is electronegative i.e electron donor and sodium is highly electrospositive hence sharing of electrons would cause electrostatic attraction between them.

aluminum oxide : The ideal situation of ionic bonds that is between metal and non-metals is present in aluminum oxide.

Answer from: Quest

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

Answer from: Quest

the dissociation of nickel hydroxide is follows:

$ni(oh)_2 > ni^2^+ + 2 oh^-$

$ksp for no(oh)2 = 5.5 * 10^-^1^6$

$5.5 * 10^-^1^6 = s * (2 s)^2 = 4 s^3$

$s^3 = 137.5 * 10^-^1^8$

$s = 5.14 * 10^-^6 = [oh^-]$

the concentration of hydroxide ion is

$5.14 * 10^-^6 = [oh^-]$

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

$k = [ ni^2^+] * [oh^-]^2$

$6.1 * 10^-^1^6 = [ ni^2] * [5.14 * 10^-^6]^2$

$[ ni^2^+] = 0.23 * 10^-^4 mol /l$

thus, concentration of ni is 0.23 * 10^-^4 mol /l

Another question on Chemistry

Chemistry, 21.06.2019 20:10

Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.

Answers: 1

Answer

Chemistry, 22.06.2019 08:30

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Answers: 1

Answer

Chemistry, 22.06.2019 10:30

How do you lengthen a pattern piece? (family and consumer science, sewing)

Answers: 2

Answer

Chemistry, 22.06.2019 14:30

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize