$C o n c . H N O_{3}$ can be stored in container of :

A l

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S n

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C u

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Z n

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Solution

The correct option is B $A l$
The $A l_{2} O_{3}$ coatings will dissolve in aqueous Nitric acid (about 90% $H N O_{3}$ dilution)
$A l_{2} O_{3} (s) + 6 H N O_{3} (a q) \to 2 A l (N O_{3})_{3} (a q) + 3 H_{2} O$
Concentrations above 90% $H N O_{3}$ do not react with the Aluminum oxide coating.
Hence option A is correct.

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Similar questions

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C u {S O}_{4}

can be stored?

E_{{C u}^{2 +} / C u}^{o} = 0.34 V

E_{{F e / F e}^{2 +}}^{o} = 0.44 V, E_{{A l / A l}^{3 +}}^{o} = 1.66 V

E_{N i / {N i}^{2 +}}^{o} = 0.25 V, E_{{A g}^{+} / A g}^{o} = 0.80 V

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Q. '

N a O H

cannot be stored in the vessel made of

Z n

A l

B e

.'
Answer whether the above statement is true or false.

The SRP values of Zn, Ag, Ni and Cu electrodes are -0.76V, 0.80V, 0.25V and 0.34V respectively in which container $C u S O_{4}$ solution should be stored:

Q. Assertion: Copper sulphate solution can be stored in a zinc vessel.
Reason:

E_{C u^{2 +} | C u}^{⊖} = 0.34 V, E_{Z n^{2 +} | Z n}^{⊖} = - 0.76 V

E_{A g^{\oplus} | A g}^{⊖} = 0.80 V

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Conc.HNO3 can be stored in container of :

The correct option is B AlTheAl2O3 coatings will dissolve in aqueous Nitric acid (about 90% HNO3 dilution)Al2O3(s)+6HNO3(aq)→2Al(NO3)3(aq)+3H2O Concentrations above 90% HNO3 do not react with the Aluminum oxide coating. Hence option A is correct.

$C o n c . H N O_{3}$ can be stored in container of :