15. In aqueous solution magnesium chloride
dissociates into ions as follows.
MgCl2(aq) → Mg2+ (aq) + 2Cl(aq)
Calculate the number of ions produced when
23.75 g of magnesium chloride is dissolved
in water
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Explanation:
Answer
1 mole→ 111 g CaCl2
∴ 222gCaCl2 is equivalent to 2 moles of CaCl2
Since 1 formula unit CaCl2 gives 3 ions, therefore, 1 mol of CaCl2
will give 3 moles of ions
2 moles of CaCl2 would give 3×2=6 moles of ions.
No. of ions = No. of moles of ions × Avogadro number
=6×6.022×1023
=36.132×1023
=3.6132×1024ions
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