All categories

3 years ago

Why are group 5A element have different oxidation state from -3 to +5

Chemistry

1 answer:

leva [86]3 years ago

6 0

Answer:

Because the oxidation state is an artificial number

Explanation:

The oxidation state is the charge that an atom would have if all its shared electrons belonged to the more electronegative atom, that is, if the bonds were completely ionic. This seldom happens.

For example, consider NH₃ and HNO₃.

Both compounds are covalent.

However, the N in NH₃ has an oxidation number of -3, because N is more electronegative than H.

Thus, N "gains" the three H electrons and gets a theoretical charge of -3.

The N in HNO₃ has an oxidation number of +5, because O is more electronegative than N.

Thus, N "loses" its five electrons and gets a theoretical charge of +5.

You might be interested in

How do you solve (2x+1)+(x-10)=90

Tamiku [17]

Start by adding ten to 90 then subtract ING one

4 0

3 years ago

Mg(OH)2 is a sparingly soluble salt with a solubility product, Ksp, of 5.61×10−11. It is used to control the pH and provide nutr

Solnce55 [7]

Answer:

The ration of the molar solubility is 165068.49.

Explanation:

The solubility reaction of the magnesium hydroxide in the pure water is as follows.

$Mg(OH)_{2}\Leftrightarrow Mg^{2+}(aq)+2(OH)^{-}(aq)$

$[Mg^{2+}][OH^{-}]$

Initial 0 0

Equili +S +2S

Final S 2S

$K_{sp}=[Mg^{2+}][OH^{-}]$

$5.61\times 10^{-11}=(S)(2S)^{2}$

$S=(\frac{5.61\times 10^{-11}}{4})^{1/3}=2.41\times 10^{-4}M$

Solubility of $Mg(OH)_{2}$ in 0.180 M NaOH is a follows.

$Mg(OH)_{2}\Leftrightarrow Mg^{2+}(aq)+2(OH)^{-}(aq)$

$[Mg^{2+}][OH^{-}]$

Initial 0 0

Equili +S +2S

Final S 2S+0.180M

$K_{sp}=[Mg^{2+}][OH^{-}]$

$5.61\times 10^{-11}=(S)(2S+0.180)^{2}$

$S=1.46\times 10^{-9}M$

$Ratio\,of\,solubility=\frac{2.41\times 10^{-4}}{1.46\times 10^{-9}}=165068.49$

Therefore, The ration of the molar solubility is 165068.49.

4 0

3 years ago

Give examples of:<br> chemical reactions in the kitchen.<br> • chemical reactions in living things.

Veronika [31]

chemical reactions in the kitchen

Baking soda and vinegar create carbon dioxide. In both of these cases, a chemical reaction between a solid and liquid creates a new substance, a gas. Both yeast and baking soda can be used to create a gas.

chemical reactions in living things

when you hard boil an egg, the hydrogen sulfide produced by heating the egg white can react with iron from the egg yolk to form a grayish-green ring around the yolk.

3 0

3 years ago

Read 2 more answers

25. Which of the following is represented in the highest percentage by volume in dry air? A. Carbon dioxide B. Hydrogen C. Nitro

emmasim [6.3K]

The correct option is C. Nitrogen gas has the highest percentage by volume of all the gases that make up the air.
The composition of the air is as follows:
nitrogen = 78.09%
Oxygen = 20.95%
Argon = 0.93%
Carbon dioxide = 0.04%
water vapour = traces amount.

8 0

4 years ago

In a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for t

HACTEHA [7]

Answer:

Energy is released in this reaction possibly in the form of heat thus it is an exergonic and or exothermic reaction.

The energy is sometimes transferred as heat, inflicting the reaction mixture and its surroundings to become hotter. The temperature increase may be detected employing a measuring device. Some samples of exothermic reactions are: Combustion .An chemical reaction may be a chemical process that releases energy by lightweight or heat.

Explanation:

6 0

3 years ago

Read 2 more answers