Write the dissociation reactions of the following substances. a) MgCl2 b)KF c)BaNO3

Md Ariful Islam

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Solution:

a) Magnesium cloride (MgCl2) is highly soluble in water.

In water it dissociates to ions: magnesium ion (Mg2+) and two cloride ions (Cl-).

MgCl2(aq) → Mg2+(aq) + 2Cl-(aq)

b) Potassium fluoride (KF) is highly soluble in water.

In water it dissociates to ions: potassium ion (K+) and fluoride ion (F-).

KF(aq) → K+(aq) + F-(aq)

c) Barium nitrate (Ba(NO3)2) is highly soluble in water.

In water it dissociates to ions: barium ion (Ba2+) and two nitrate ions (NO3-).

Ba(NO3)2(aq) → Ba2+(aq) + 2NO3-(aq)

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