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Phosphine

Select the co...

Question

Select the correct statements :

pH of

N a H C O_{3}

solution can be given by

\frac{p K_{H_{2} C O_{3}} + p K_{H C O_{3}^{-}}}{2}

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A l^{3 +}

ion is amphoteric

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K_{s p}

values of metal nitrate are very very high

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N a^{+}

(aq) . is conjugate acid of NaOH (aq)

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Solution

The correct options are
A pH of $N a H C O_{3}$ solution can be given by $\frac{p K_{H_{2} C O_{3}} + p K_{H C O_{3}^{-}}}{2}$
C $K_{s p}$ values of metal nitrate are very very high
D $N a^{+}$ (aq) . is conjugate acid of NaOH (aq)

Suggest Corrections

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Z n {(O H)}_{2}

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K_{s p} = 1.2 \times 10^{- 17}

Z n {(O H)}_{2} (s) + 2 {O H}^{-} (a q) ⇌ {[Z n ({O H)}_{4}]}^{2 -} (a q)

K_{c} = 0.12

p H

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N a N H_{2 (s)} + H_{2} O_{(l)} ⇌ N a_{(a q)}^{+} + O H_{(a q)}^{-} + N H_{3 (a q)}

N O_{3}^{-}

E^{\circ}

E^{\circ}

V^{2 +} (a q) + 2 e^{-} \to V; E^{0} = - 1.19 V

F e^{3 -} (a q) + 3 e^{-} \to F e; E^{\circ} = - 0.04 V

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H g^{2 +} (a q) + 2 e^{-} \to H g; E^{0} = + 0.86 V

N O_{3}^{-}

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