Chemistry, 25.04.2020 03:48 garcser257278

Determine the oxidation number (oxidation state) of each element in the compound CuCO3. Cu: C: O: Determine the oxidation number of each element in CH4. C: H: Determine the oxidation number of each element in IF. I: F: Determine the oxidation number of each element in CH2Cl2. C: H: Cl:

Answers: 3

Show answers

Answers

Answer from: hinacat87

Answer :

(a) The oxidation number of Cu, C and O is, (+2), (+4) and (-2)

(b) The oxidation number of C and H is, (-4) and (+1)

(d) The oxidation number of C, H and Cl is, (0), (+1) and (-1)

Explanation :

Oxidation number : It is also called oxidation state. It is a number assigned to an element in a chemical compound that represent the number of electrons gained or lost by an element in a compound.

Rules for Oxidation Numbers :

The oxidation number of a free element is always zero.

The oxidation number of a monatomic ion equals the charge of the ion.

The oxidation number of Hydrogen (H) is +1, but it is -1 in when combined with less electronegative elements.

The oxidation number of oxygen (O) in compounds is usually -2, but it is -1 in peroxides.

The oxidation number of a Group 1 element in a compound is +1.

The oxidation number of a Group 2 element in a compound is +2.

The oxidation number of a Group 17 element in a binary compound is -1.

The sum of the oxidation numbers of all of the atoms in a neutral compound is zero.

The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

(a) The given compound is, CuCO_3

Let the oxidation state of Cu be, 'x'

As, the oxidation number of carbon is (+4) and oxidation number of oxygen is (-2).

$x+4+3(-2)=0\\\\x=+2$

The oxidation state of Cu is, (+2)

(b) The given compound is, CH_4

Let the oxidation state of C be, 'x'

As, the oxidation number of hydrogen is (+1).

$x+4(+1)=0\\\\x=-4$

The oxidation state of C is, (-4)

Let the oxidation state of I be, 'x'

As, the oxidation number of a Group 17 element in a binary compound is -1. And iodine and fluorine belongs to 17 group.

$x+(-1)=0\\\\x=+1$

The oxidation state of I is, (+1)

(d) The given compound is, CH_2Cl_2

Let the oxidation state of C be, 'x'

As, the oxidation number of hydrogen is (+1) and oxidation number of a Group 17 element (Cl) in a binary compound is -1.

$x+2(+1)+2(-1)=0\\\\x=0$

The oxidation state of C is, (0)

Answer from: lyly214

Different elements has different types of oxidation state or number.

Oxidation number of each element

The oxidation number of Copper is +2, Carbon is +4 and Oxygen is -2. The oxidation number of Carbon is -4 and Hydrogen is +1. The oxidation number of I is +1 and iron is -1. The oxidation number of Carbon is 0, Hydrogen is +1 and Chlorine is -1.

The oxidation state or oxidation number refers to the hypothetical charge occur on an atom if all of its bonds were fully ionic means complete transfer of electron. The oxidation state may be positive, negative or zero so different atoms formed different oxidation state.

Learn more about oxidation here: link

Learn more: link

Answer from: Quest

they are made of gases.

they have a spherical shape.

they make energy through fusion.

Answer from: Quest

True, the standard unit for volume is liters which can be represented by either a lower case "l" or a capital "l"

Another question on Chemistry

Chemistry, 21.06.2019 18:30

Strong conductivity of plasma allows it to act and react as and

Answers: 2

Answer

Chemistry, 22.06.2019 04:30

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Answers: 1

Answer

Chemistry, 22.06.2019 09:30

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

Answers: 1

Answer

Chemistry, 22.06.2019 16:30

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

Answers: 1

Answer

You know the right answer?

Determine the oxidation number (oxidation state) of each element in the compound CuCO3. Cu: C: O: De...

Questions

Chemistry, 15.12.2020 16:50

Calculate the amounts of each substance in the reaction below if an initial amount of 0.400 moles are brought together with an initial amount of 2.29...

Chemistry, 15.12.2020 16:50

How many moles of each element are in 3.0 moles of Sr(HCO3)2...