Chemistry, 17.10.2019 00:30 fefebat

Directions: each set of lettered choices below refers to the numbered statements immediately following it. select the one lettered choice that best fits each statement. a choice may be used once, more than once, or not at all in each set. the following questions refer to the reactions represented below. (a) h2seo4(aq) + 2 cl-(aq) + 2 h+(aq) → h2seo3(aq) + cl2(g) + h2o(l) (b) s8(s) + 8 o2(g) → 8 so2(g) (c) 3 br2(aq) + 6 oh-(aq) → 5 br-(aq) + bro3-(aq) + 3 h2o(l) (d) ca2+(aq) + so42-(aq) → caso4(s) (e) ptcl4(s) + 2 cl-(aq) → ptcl62-(aq) a reaction in which the same reactant undergoes both oxidation and reduction

Answers: 3

Show answers

Answers

Answer from: amakayla57

Answer : The only reaction (C) that shows that the same reactant undergoes both oxidation and reduction.

Explanation :

Disproportionation reaction : It is defined as the reaction in which the same reactant undergoes both oxidation and reduction reaction. It is a redox reaction.

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.

(A) The given balanced reaction is,

$H_2SeO_4(aq)+2Cl^-(aq)+2H^+(aq)\rightarrow H_2SeO_3(aq)+Cl_2(g)+H_2O(l)$

This reaction is a redox reaction but not disproportionation reaction because in this reaction there are two reactants in which chlorine shows oxidation and selenium shows reduction.

(B) The given balanced reaction is,

$S_8(s)+8O_2(g)\rightarrow 8SO_2(g)$

This reaction is a redox reaction but not disproportionation reaction because in this reaction there are two reactants in which sulfur shows oxidation and oxygen shows reduction.

$3Br_2(aq)+6OH^-(aq)\rightarrow 5Br^-(aq)+BrO_3^-(aq)+3H_2O(l)$

This reaction is a disproportionation reaction because in this reaction only one reactant bromine that shows both oxidation and reduction reaction.

(D) The given balanced reaction is,

$Ca^{2+}(aq)+SO_4^{2-}(aq)\rightarrow CaSO_4(s)$

This reaction is a combination reaction in which the two reactant react to give a single product. There is no changes in the oxidation state of calcium and sulfate.

(E) The given balanced reaction is,

$PtCl_4(s)+2Cl^-(aq)\rightarrow PtCl_6^{2-}(aq)$

This reaction is a combination reaction in which the two reactant react to give a single product. There is no changes in the oxidation state of platinum and chlorine.

Hence, the only reaction (C) that shows that the same reactant undergoes both oxidation and reduction.

Answer from: Quest

Exothermic, physical change after it is already baked

Answer from: Quest

Ddvgredcvseyhbvvvg

Another question on Chemistry

Chemistry, 21.06.2019 19:30

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Answers: 1

Answer

Chemistry, 22.06.2019 06:40

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?

Answers: 3

Answer

Chemistry, 22.06.2019 08:00

An observation that requires measurement is called quantitative observable or qualitative

Answers: 1

Answer

Chemistry, 22.06.2019 09:00

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Answers: 1

Answer

You know the right answer?

Directions: each set of lettered choices below refers to the numbered statements immediately follow...

Questions