correct option is 3...why can't 1st option be correct
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ammonium Hydroxide and ammonium chloride form a mixture of weak base and its salt whereas Barium Chloride and barium nitrate or both are salts.
common Ion effect effect in equilibrium caused by the addition of ionic common to the equilibrium mixture.
common Ion effect effect in equilibrium caused by the addition of ionic common to the equilibrium mixture.
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