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Pepsi [2]
3 years ago
15

Well, we might as well try a similar question. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and an aque

ous solution of magnesium (II) chloride. What substance is being oxidized. A)H2(g) B)MgCl2(aq) C)HCl(aq) D)Mg(s)
Chemistry
1 answer:
bonufazy [111]3 years ago
3 0

Answer: Mg is being oxidized.

Explanation:

The chemical equation for magnesium metal reacts with hydrochloric acid to produce hydrogen gas and an aqueous solution of magnesium (II) chloride.

Mg(s)+2HCl\rightarrow MgCl_2(aq)+H_2(g)

Oxidation reaction : When there is a loss of electrons and an increase in oxidation state number.

Mg\rightarrow Mg^{2+}+2e^-

Reduction reaction : when there is gain of electrons and a decrease in oxidation state number.

2H^{+}+2e^-\rightarrow H_2

Thus Mg is being oxidized.

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Calculate the molar concentration of the Br⁻ ions in 0.51 M MgBr2(aq), assuming that the dissolved substance dissociates complet
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3 years ago
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2Mg + O2à MgO For this unbalanced chemical equation, what is the coefficient for oxygen when the equation is balanced? A. 1 B. 2
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Answer:

The answer to your question is the letter A. 1

Explanation:

Unbalanced chemical reaction

                      Mg  +  O₂  ⇒  MgO

               Reactants    Elements    Products

                       1            Magnesium       1

                       2           Oxygen              1

Balanced chemical reaction

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Conclusion

The coefficients of the balanced equation are 2, 1, 2

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