Which one is oxidising agent in the reaction- 2CrO42- - 2H- Cr2O72- - H2O-

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Catalytic Hydrogenation

Which one is ...

Question

Which one is oxidising agent in the reaction, $2 C r O_{4}^{2 -} + 2 H^{+} \to C r_{2} O_{7}^{2 -} + H_{2} O$ .

H^{+}

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C r_{2} O_{4}^{-}

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C r^{+ +}

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None of these

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Solution

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Similar questions

C r_{2} O_{7}^{2 -} + H_{2} O \to 2 C r O_{4}^{2 -} + 2 H^{+}

M g + 2 H^{+} \to M g^{2 +} + H_{2}

M g

H^{+}

M g

H^{+}

14 H^{+} + C r_{2} O_{7}^{2 -} + 2 C r^{3 +} + 7 H_{2} O + 3 N i^{2 +}

2 H^{+} + M g \to M g^{2 +} + H_{2}

Question 6

Consider the reactions

(i) $H_{2} O_{2} + 2 H I \to I_{2} + 2 H_{2} O$
(ii) $H O C l + H_{2} O_{2} \to H_{3} O^{+} C l^{-} + O_{2}$

Which of the following statements is correct about $H_{2} O_{2}$ with reference to these reactions? Hydrogen peroxide is ........

(a) an oxidising agent in both (i) and (ii)

(b) an oxidising agent in (i) and reducing agent in (ii)

(d) a reducing agent in both (i) and (ii)

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