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Avogadro's Law & Gay Lussac's Law

State whether...

Question

State whether the following statement is true or false:

$C u^{2 +}$ and $C d^{2 +}$ both form soluble complex with $C N^{-}$ but are decomposed by $H_{2} S$ .

True

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False

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Solution

The correct option is A True
Both form complex with $C N^{-}$
$C u + 4 C N^{-} \to C u (C N)_{4}^{3 -}$
$C d + 4 C N^{-} \to C d (C N)_{4}^{2 -}$ (unstable)
If $H_{2} S$ is passed through solution yellow ppt of CdS forms.

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Similar questions

C u^{2 +}

C d^{2 +}

B u t - 2 - y n e

C u^{2 +}

C d^{2 +}

C u^{2 +}

C d^{2 +}

C u^{2 +} + 2 C N^{-} ⟶ C u (C N)_{2}

C u (C N)_{2} ⟶ 2 C u C N ↓ + (C N)_{2}

C u C N + 3 K C N K_{3} C u (C N)_{4}] s t a b l e C d^{2 +} + K C N ⟶ K_{2} [C d (C N)_{4}] u n s t a b l e

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[C d (C N)_{4}]^{2 -} ⇌ C d^{2 +} + 4 C N^{-}

C d^{2 +} + S^{2 -} ⟶ C d S y e l l o w ↓

K_{3} [F e (C N)_{6}]

State whether the following statements are true or false. If false, give the correct statement.

(a) Forests influence climate, water cycle and air quality.

State whether the following statements are true or false. If false, give the correct statement.

(b) In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation.

(3)

State whether the following statements are true or false. If false, give the correct statement.

(4)
State whether the following statements are true or false. If false, give the correct statement.

(d) Forests protect the soil from erosion.

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