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snow_lady [41]
3 years ago
14

Which substance is oxidized and which is reduced in this reaction?

Chemistry
1 answer:
Eddi Din [679]3 years ago
6 0

Answer:

A) HBr oxidized; HCl reduced

Explanation:

Chemical equation:

Cl₂ + 2HBr → 2HCl + Br₂

The given reaction is redox reaction because oxidation reduction take place.

Cl₂ is reduced from oxidation state 0 to -1 while HBr oxidized from -1 to 0.

Chlorine is oxidizing agent while HBr is reducing agent.

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Oxidizing agents:

Oxidizing agents oxidize the other elements and itself gets reduced.

Reducing agents:

Reducing agents reduced the other element are it self gets oxidized

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NISA [10]

Answer:

C. involve the attraction of opposite charges

Explanation:

<em>Ionic bonding</em> involves the attraction between <em>oppositely charged ions</em>, as in Na⁺ Cl⁻.

<em>Covalent bonding</em> involves the attraction between <em>negatively charged electrons and positivey charged nuclei</em>, as in a C-H bond.

A is <em>wrong</em>. Ionic bonding involves the transfer of electrons.

B is <em>wrong</em>. Covalent bonding involves the sharing of electrons.

D is <em>wrong</em>. Ionic bonds are usually stronger than covalent bonds.

5 0
3 years ago
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NISA [10]

Answer:

B: +3

Explanation:

If Gallium loses 3 electrons, it will become an ion.

The ion will be positively charged because in this new ion, the number of electrons is lesser than the number of protons. The charge difference will impart a positive net charge on the ion.

  • In a neutral atom, the number of electrons and protons are the same.
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If Gallium the loss of 3 electrons offsets the charge balance in the chemical specie. Thus, the ion will have a net +3 charge.

3 0
2 years ago
Reading Science
anzhelika [568]

Answer:

B They go through many developmental changes.

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According to the passage, development of frogs are susceptible to minor environmental changes due to the series of developmental changes they undergo.

During the developmental phase of a typical frog, several complicated cellular differentiation cycles occurs. These cycles are connected to one another and they are triggered by certain signals and responses. Disruption in certain environmental factors can affect the various developmental changes.

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GenaCL600 [577]

Answer:

Huh?

Explanation:

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mojhsa [17]
Technically it's not such a waste anymore but it is dangerous chemicals that could kill others around it. 

Let me know if you need additional help in private message.

-GeVontae The Brainly team.
3 0
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