Pesticides Physical properties or Chemical Properties

dentify the oxidation state of Cl in Cl 2 O 7 . +2 Identify the oxidation state of Cl in AlCl − 4 . +1 Identify the oxidation st

konstantin123 [22]

Answer:

1. +7

2. -1

3. +3

4. +5

Explanation:

1. Identify the oxidation state of Cl in Cl₂O₇ .

Cl₂O₇ is a neutral compound.

In a neutral compound the oxidation states add up 0.

The oxidation state of oxygen in all the binary compounds, except the peroxides (where two oxygen atoms are bonded together and with other elements) is -2.

Since there are 7 atoms of O, the total oxidation number from it is (-2) × 7 = -14.

Then, the oxidation number from the Cl atoms must add up +14 (because the compound is neutral).

Since there are two atoms of Cl each one must contribute with +14/2 = +7 to the oxidation number.

That is the oxidation state of Cl in the compound. The answer is +7.

2 Identify the oxidation state of Cl in AlCl ₄⁻ (the formula was corrected)

The most common oxidation state of Al is +3.

Since the net charge of the ion is -1, the oxidation number of the other atom (call it x) must be such that four times it and +3 add up -1:

4x + 3 = - 1

4x = -1 - 3

4x = - 4

x = - 1

In conclusion, the oxidation state of Cl in the ion is -1

3. Identify the oxidation state of Cl in Ba (ClO₂)₂ .

This is a neutral compound. Thus the overall oxidation number is 0.

The oxidation state of Barium, Ba, such as of the other members of the group 2, alkaline earth metals, is +2.

The oxydation state of oxygen, O, in ternary compounds is -2

Thus, calling x the oxidation state of Cl and taking in account the number of atoms in the compound:

+2 + 2x + 4(-2) = 0

2x + 2 - 8 = 0

2x = 6

x = +3

Therefore, the oxidation state of Cl in this compound is +3

4. Identify the oxidation state of Cl in ClF₄⁺

Fluor has oxidation state -1. Since there are four atoms, it contributes with 4 × (-1) = - 4

The overall charge of the ion is +1.

Thus, the oxidation state of Cl, x, is:

x - 4 = 1

x = 1 + 4

x = +5

Hence, the oxidation state of Cl in this ion is +5.

6 0

2 years ago

Read 2 more answers

Is there an N−Cl bond in solid ammonium chloride?

Tems11 [23]

When ammonia is reacted with HCl it abstracts proton from acid and forms Ammonium Ion and Chloride Ion.

NH₃ + HCl → ⁺NH₄ + Cl⁻ (simply Written NH₄Cl)
Structure,
The structure of Ammonium Chloride is among those structures which contains all three types of bonding's, i.e.

Ionic Bond

Covalent Bond

Coordinate Covalent Bond

Three Hydrogen atoms previously bonded with Nitrogen are covalent in nature. The new incoming proton from HCl forms co-ordinate covalent bond with Nitrogen and Chloride Ion containing negative charge make Ionic Bond with the positive Ammonium Ion. In question, if the line between Nitrogen and Chlorine atom is assumed covalent then it is incorrect. Structure is shown below,

5 0

2 years ago

What changes happen to ions which are attracted to cathode during electrolysis?

saul85 [17]

Answer:

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6 0

3 years ago

Need asap thank you

cupoosta [38]

Answer:

c.boron-11

Explanation:

The atomic mass of boron is 10.81 u.

And 10.81 u is a lot closer to 11u than it is to 10u, so there must be more of boron-11.

To convince you fully, we can also do a simple calculation to find the exact proportion of boron-11 using the following formula:

(10u)(x)+(11u)(1−x)100%=10.81u

Where u is the unit for atomic mass and x is the proportion of boron-10 out of the total boron abundance which is 100%.

Solving for x we get:

11u−ux=10.81u

0.19u=ux

x=0.19

1−x=0.81

And thus the abundance of boron-11 is roughly 81%.

6 0

2 years ago

The property of a substance stays ______________ no matter how the substance is used.

Irina18 [472]

Any substance changes to another substance that means the change of the physical property. Like water () has different state which changes as the temperature changes. It remain as liquid in the room temperature, in solid form at or below 0°C and vapor phase on or above 100°C. But in all the stage or phase of the substance the composition of the water i.e. remains. Thus the chemical property remains fixed when a substance change to other substance.

3 0

3 years ago