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Pavel [41]
3 years ago
14

Write balanced chemical equation for the oxidation of fe2+(aq) by s2o2−6 (aq).

Chemistry
1 answer:
Iteru [2.4K]3 years ago
6 0
To write a balanced chemical equation for the given redox reaction, we need to know the half reactions of the substances involved. Redox reaction means oxidation-reduction reaction. Oxidation is when one loses electrons making it more positive while reduction is gaining electrons which makes it more negative. Iron here is being oxidized and will have the half reaction:

<span>Fe2+(aq) ---> Fe3+(aq) + e+
</span>
<span> S2O2−6 is being reduced in the process and will have a half reaction of:

</span>S2O2-6 + 4H+ + 2e- ----> <span>2H2SO3
</span>
Adding the two half reactions would yield to the balanced chemical equation. We do as follows:


2 (Fe2+ ---> Fe3+ + e+)
S2O2-6 + 4H+ + 2e- ----> 2H2SO3
----------------------------------------------------------------
2Fe2+ + S2O2-6 + 4H+  ----> 2Fe3+ + 2H2SO3  ( balanced oxidation - reduction reaction )
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6 0
3 years ago
as 100 milliliters of 0.10 molar KOH is added to 100 milliliters of 0.10 molar HCL at 298 K, the pH of the res?A. decrease to 3B
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Answer:

C. increase to 7.

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

KOH+HCl\rightarrow KCl+H_2O

Thus, the molar relationship is 1 to 1, therefore, the moles are:

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Thus, since the entire hydrogen ions are neutralized, the pH C. increase to 7.

Best regards.

8 0
3 years ago
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Explanation:

You may find the chemical reaction and the structure of molecules in the attached picture.

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3 0
3 years ago
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Finger [1]

Answer:

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Explanation:

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6 0
2 years ago
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hope this helps :)
3 0
2 years ago
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