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NEET 2016

Exam: NEET
Year: 2016
Subject: Chemistry
Chapter: p Block Elements (Group 13 & 14)

NEET 2016 · Chemistry · p Block Elements (Group 13 & 14)

AlF _ 3 is soluble in HF only in presence of KF . It is due to the...

{AlF}_{3}

is soluble in

HF

only in presence of

KF

. It is due to the formation of

Options

A ${K}_{3}\left[{AlF}_{3}{H}_{3}\right]$
B ${K}_{3}\left[{AlF}_{6}\right]$
C ${AlH}_{3}$
D $K\left[{AlF}_{3}H\right]$

Correct answer

B. ${K}_{3}\left[{AlF}_{6}\right]$

Step-by-step solution

{AlF}_{3}

is soluble in the presence of

KF

due to the formation of soluble complex

{K}_{3}[ {AlF}_{6} ]

.

{AlF}_{3} + 3KF\overset{HF}{\to}{K}_{3}[ {AlF}_{6} ]

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