subject

Chemistry, 12.12.2019 18:31 tylerharmsss

An oxidation-reduction reaction that is also a synthesis reaction

a. 2mg(s) + o2(g) --> 2 mgo(s)
b. pb^2+(aq) + cro4^2-(> pbcro4(s)

ansver

Answers: 1

Show answers

Answers

ansver

Answer from: jules8022

$\rm 2\;Mg\;(s)\;+\;O_2\;(g)\;\rightarrow\;2\;MgO\;(s)$ , this is the redox reaction and also a synthesis reaction.

A redox reaction is that where reduction and oxidation take simultaneously.

The synthesis reaction is one in which the product is formed.

(A) The reaction of Mg with $\rm O_2$ will form MgO.

Since there is the formation of the product by reaction of 2 reagents, it is a synthesis reaction.

In this reaction, Mg is getting oxidized and oxygen is getting reduced.

So this is a redox reaction as well.

(B) The reaction of Pb with chromate will result in $\rm PbCrO_4$ .

There is a formation of product in the reaction, so it is a synthesis reaction.

There is no change in the oxidation state of lead, so it is not a redox reaction.

For more information about oxidation-reduction reaction, refer the link:

link

ansver

Answer from: onlymyworld27

The oxidation reduction reaction which is also a synthesis reaction is:

A. $2Mg(s)+O_{2}(g)\rightarrow 2MgO(s)$ .

Explanation:

A Synthesis reaction is a reaction in which two or more reactants combine to form a single product.

A redox reaction(oxidation reduction) is a reaction in which one species is oxidised and one is reduced simultaneously.

Oxidation: Loss of electron or increase in oxidation state

Reduction: Gain of electron or decrease in oxidation state

In both cases A,B two reactant are combining to give a single compound.So both are synthesis reaction.

A. $2Mg(s)+O_{2}(g)\rightarrow 2MgO(s)$ is a redox reaction :

Oxidation of Mg : $2Mg(s)\rightarrow 2Mg^{2+}+4e^{-}$

(increase in oxidation state of Mg from 0 to +2)

Reduction of Oxygen: $O_{2}(g)+4e^{-}\rightarrow 2O^{2-}$

(decrease in oxidation state of O from 0 to -2)

on combining above half-reactions:

$2Mg(s)+O_{2}(g)\rightarrow 2MgO(s)$

Its both redox and synthesis reaction.

But there is no change in oxidation states of elements in Reaction B

$Pb^{2+}(aq)+CrO_{4}^{2-}\rightarrow PbCrO_{4}(s)$

oxidation state of Pb is (+2) in both $Pb^{2+}$ and $PbCrO_{4}$ :

$Pb^{2+}\rightarrow PbCrO_{4}$

Cr has (+6) oxidation state in both $CrO_{4}{2-}$ and $PbCrO_{4}$ :

$CrO_{4}{2-}\rightarrow PbCrO_{4}$

No change in oxidation state so no loss/gain of electrons .Hence not a redox reaction

B. is not a oxidation reduction reaction ,its just a synthesis reaction.

Hence,

The oxidation reduction reaction which is also a synthesis reaction is:

A. $2Mg(s)+O_{2}(g)\rightarrow 2MgO(s)$ .

ansver

Answer from: Quest

the answer is c i believe

ansver

Answer from: Quest

i think it is true since you can test the answer and can use observations to complete it.

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 01:30, creepycrepes

__can be defined as which velocity changes

Answers: 1

Chemistry, 22.06.2019 10:30, scott5315

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

Answers: 3

Chemistry, 22.06.2019 17:00, olsen6932

Complete each row of the table below by filling in the missing prefix or missing exponent.

Answers: 1

Chemistry, 23.06.2019 01:00, aliviadushane

If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms

Answers: 1

You know the right answer?

An oxidation-reduction reaction that is also a synthesis reaction

a. 2mg(s) + o2(g) --&g...

Questions in other subjects:

Konu

Mathematics, 30.03.2021 03:40

Help for brainlist and 5 stars!! ...

Konu

Mathematics, 30.03.2021 03:40

Joseph made 5% of his free throws over the season. If he shot 160 free throws, how many did he make? I rly need help omagash...

Konu

Spanish, 30.03.2021 03:40

1 53Lumikha ng isang awit na may anyong Unitary at gamitan ito ng sariling tono Gumamit lamang ngisang taludtod (verse)2CRITERIA41. Nakal...

Konu

Mathematics, 30.03.2021 03:40

A six-sided die is tossed and a coin is flipped. What is the fractional probability that the die lands on 4 and the coin is heads?...

Konu

Chemistry, 30.03.2021 03:40

Who the #!$% is gibbs and why is he giving out free energy ...

Konu

English, 30.03.2021 03:40

Explain How To Overcome Challenges In President Obama’s National Address To America's SchoolChildren...

Konu

Biology, 30.03.2021 03:40

The answer please hurry ...

Konu

Biology, 30.03.2021 03:40

What is responsible for the apparent motion of the Moon in the sky from East to West? es 0) A) The rotation of Earth about its axis B) The revolution of Ea...

Konu

Chemistry, 30.03.2021 03:40

Which type of neuron carries impulses from the brain?...

Konu

Mathematics, 30.03.2021 03:40

Given that f(0.9) = 6.7 and f(1.3) = 4.5, approximate f'(0.9). f'(0.9)=...

More questions: Chemistry Another questions