How many moles of sulfate ions are present in the solution?
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Al2(SO4)3 being a salt and readily dissociates in water forming Al3+ ions and (SO4)2– ions as depicted in the following equation :
Al2(SO4)3 →2Al3+ + 3(SO4)2-
From this equation, it can seen that 1 mole Al2(SO4)3 ~ 3 moles (SO4)2-
Hence, 4.5 moles Al2(SO4)3 ~ 3 x 4.5 moles (SO4)2- or 13.5 moles (SO4)2-
Explanation:
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