Consider the following reactions The oxidation states of Cu in Z and Q, respectively are:

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Solution

Q.
Consider the following reactions

${Na}_{2} B_{4} O_{7} \overset{Δ}{\to} 2 X + Y$

${CuSO}_{4} + Y \overset{Non-luminous flame}{\to} Z + {SO}_{3}$

$2 Z + 2 X + Carbon \overset{Luminous flame}{\to} 2 Q + {Na}_{2} B_{4} O_{7} + CO$

The oxidation states of Cu in Z and Q, respectively are: [2026]

1 +2 and +2

2 +1 and +1

3 +2 and +1

4 +1 and +2

Ans.
(3)

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