Attention required!
Mg(OH)2is soluble in NH4Cl but insoluble in NaCI because the Mg2+is less reactive than Na+ion. Ammonium chloride, being a soluble salt, dissociates completely to khung ammonium cation & chloride ions.
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The NH+4ions can act as an acid and neutralize the OH–ions to khung ammonia & water.
∴ TheNH+4cations will neutralize the hydroxide anions present in solution. Due khổng lồ which, the equilibrium will shift to the right to lớn create more OH–ions. This will determine more ions to be dissolve from the solid.Mg(OH)2+ 2NH4Cl ➝ MgCl2+ 2NH4OHHowever, magnesium ion can not displace the sodium ion since the later is more reactive than the former.Mg(OH)2+NaCl ➝ No reaction
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