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NNADVOKAT [17]
3 years ago
14

Classify the following reactions as either redox, acid-base, or precipitation. a) (Cl2) + (2OH-) --> (Cl-) + (ClO-) + (H2O).

b) already got. c) (NH3) + (H+) --> (NH4+). d) (4Fe) + (3O2) --> (2Fe2O3). e) (Ca) + (F2) --> (CaF2)
Chemistry
2 answers:
Alinara [238K]3 years ago
5 0
The answers to the question are presented below by letter.
a.) redox reaction   - Cl2 is reduced and OH- is oxidized
b.)
c.) acid - base reaction
d.) redox reaction  - Fe is oxidized and O2 is reduced
e.) redox reaction   - Ca is oxidized and F2 is reduced
Lisa [10]3 years ago
4 0

Answer :

(a) This is a redox reaction.

(c) This is an acid-base reaction.

(d) This is a redox reaction.

(e) This is a redox reaction.

Explanation :

Redox reaction or 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. Or we can say that in oxidation, the loss of electrons takes place.
  • Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

Acid-base reaction : It is defined as the reaction in which an acid and base react to give salt and water as a product.

Precipitation reaction : It is defined as the reaction in which an insoluble salt formed when two aqueous solutions are combined.  The insoluble salt that settle down in the solution is known an precipitate.

(a) Cl_2+2OH^-\rightarrow Cl^-+ClO^-+H_2O

This reaction is a redox reaction in which the oxidation state of Cl changes from (0) to (-1) and shows reduction and the oxidation state of Cl changes from (0) to (+1) and shows oxidation.

(c) NH_3+H^+\rightarrow NH_4^+

This reaction a an acid-base reaction in which NH_3 is a base and H^+ is an acid react to give NH_4^+ as a salt.

(d) 4Fe+3O_2\rightarrow 2Fe_2O_3

This reaction is a redox reaction in which the oxidation state of Fe changes from (0) to (+3) and shows oxidation and the oxidation state of O changes from (0) to (-2) and shows reduction.

(e) Ca+F_2\rightarrow CaF_2

This reaction is a redox reaction in which the oxidation state of Ca changes from (0) to (+2) and shows oxidation and the oxidation state of F changes from (0) to (-1) and shows reduction.

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There are three isotopes of X element (X):
Nutka1998 [239]

Answer:

Average atomic mass = 17.5 amu.

Explanation:

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X-18isotope =  atomic mass 18.1 amu, abundance 10.00%

X-19isotope = atomic mass:19.1 amu, abundance: 11.01%

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8 0
3 years ago
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Answer:

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Explanation:

6 0
3 years ago
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If a penny (with the this volume .39 cm^3) was made out of pure copper, what should its mass be?
blondinia [14]

Answer:

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Explanation:

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The mass of a pure-copper penny would be 3.49 g.

5 0
3 years ago
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