Chemistry, 07.03.2020 03:26 nakeytrag

Classify the following reaction: 2Mg(s)+O2(g)=>2MgO(s)
a.
combustion

b.
oxidation-reduction

c.
a-c are all correct.

d.
synthesis

e.
two of the above

Answers: 2

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Answer from: lobatospitones

This is an incomplete question, here is a complete question.

Classify the following reaction: $2Mg(s)+O_2(g)\rightarrow 2MgO(s)$

a. oxidation-reduction

b. combustion

c. synthesis

d. two of the above

e. a-c are all correct.

Answer : The correct option is, (e) a-c are all correct.

Explanation :

Synthesis reaction : A chemical reaction where multiple substances or reactants combine to form a single product.

It is represented as,

$X+Y\rightarrow XY$

Combustion reaction : A chemical reaction in which a hydrocarbon reaction with the oxygen to give product as carbon dioxide and water.

It is represented as,

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases.

The given chemical reaction is:

$2Mg(s)+O_2(g)\rightarrow 2MgO(s)$

It is an oxidation-reduction reaction in which Mg shows oxidation because the oxidation state of Mg changes from (0) to (+2) and O shows reduction because the oxidation state of O changes from (0) to (-2).

This reaction is also a synthesis reaction because two reactants combine to form single product.

Hence, the correct option is, (e) a-c are all correct.

Answer from: Quest

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

Answer from: Quest

each column of the table is called a group. elements in a group share similar properties. groups are read from top to bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o. 2. 3. 4. 5. 6. 7. 8. 9. 2. beryllium. 9.012. 4. sodium. 22.990. 11. 3. magnesium. 24.305. 12. potassium. 39.098. 19. 4. calcium. 40.078. 20. i guess i

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Classify the following reaction: 2Mg(s)+O2(g)=>2MgO(s)
a.
combustion

b.

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