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Haloalkanes and Haloarenes

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Haloalkanes and Haloarenes Class 12th

Aqueous solution of which of the following boron compounds will be strongly basic in nature?

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Vishal Baghel

Contributor-Level 10

Borax forms basic buffer solution in aqueous medium.

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3 months ago

Haloalkanes and Haloarenes Class 12th

The spin only magnetic moment value of an octhahedral complex among CoCl₃.4NH₃, NiCl₂.6H₂O and PtCl₄.2HCl, which upon reaction with excess of AgNO₃ gives 2 moles of AgCl is____________B. M. (Nearest integer)

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Payal Gupta

Contributor-Level 10

For precipitation of two moles of AgCl

Two Cl will produce as a free anion

CoCl₃.4NH₃ complex will $[C O {(N H_{3})}_{4} C l_{2}]$ Cl (will not give 2Cl)

$P t C l_{4} . 2 H C l \to$ complex will be H2 [PtCl6] will not any Cl

$N i C l_{2} . 6 H_{2} O \to [N i {(H_{2} O)}_{6}] C l_{2}$ will produce two Cl ion.

${[N i {(H_{2} O)}_{6}]}^{+ +} + 2 C l^{-} \to_{A g N O_{3}}^{} 2 A g C l (s)$ precipitate formation

$N i^{2 +} \to [A r] 3 d^{8} 4 s^{0}$

$μ = \sqrt[]{2 (2 + 2)} = \sqrt[]{8} = 2.84 B M = 3$

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Haloalkanes and Haloarenes Chemistry NCERT Exemplar Solutions Class 12th Chapter Two

Cu(s) + Sn²⁺(0.001M) ® Cu²⁺ (0.01M) + Sn(s)

The Gibbs free energy change for the above reaction at 298 K is x * 10^-1 KJmol^-1. The value of x is __________. (nearest integer)

[Given : $E_{C u^{2 +} / C u}^{Θ}$ 0.34V; $E_{S n^{2 +} / S n}^{Θ}$ =96500 Cmol^-1]

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Vishal Baghel

Contributor-Level 10

cell reaction is ;

$C u (s) + S n_{(a q)}^{2 +} \to C u_{(a q)}^{+ +} + S n_{(s)}$

$Q = \frac{[C u^{+ +}]}{[S n^{+ +}]} = \frac{0.01}{0.001} a n d n = 2$

$E_{c e l l} = E_{c e l l}^{o} - \frac{0.059}{2} l o g \frac{0.01}{0.001}$

$= - 0.48 - \frac{0.059}{2} l o g 10 = - 0.509$

$= 983.33 * 1 0^{- 1} K J / m o l e$

the nearest integer = 983

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3 months ago

Haloalkanes and Haloarenes Chemistry NCERT Exemplar Solutions Class 12th Chapter Two

The major product in the following reaction

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Vishal Baghel

Contributor-Level 10

Kindly consider the following figure

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Haloalkanes and Haloarenes Chemistry NCERT Exemplar Solutions Class 12th Chapter Ten

The correct order of melting point is

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Payal Gupta

Contributor-Level 10

Due to high crystallity Be has the highest M.P.

Be = 1560 K

Mg = 925 K

Ca = 1120 K

Sr = 1062 K

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Haloalkanes and Haloarenes Chemistry NCERT Exemplar Solutions Class 12th Chapter Ten

In the given conversion the compound A is:

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alok kumar singh

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Haloalkanes and Haloarenes Chemistry NCERT Exemplar Solutions Class 12th Chapter Ten

A 100 mL solution of CH₃CH₂MgBr on treatment with methanol produces 2.24 mL of a gas at STP. The weight of gas produced is __________ mg. [nearest integer]

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