Problem: When excess solid Mg(OH)2 is shaken with 1.00 L of 1.3 M NH4Cl solution, the resulting saturated solution has pH = 9.10. Calculate the Ksp of Mg(OH)2.

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FREE Expert Solution

Mg(OH)2 + NH4Cl  MgCl2 + 2 NH3 + 2 H2O


Step 1


Step 2

Ka = [NH3][H+][NH4+]5.6 × 10-10 =(x)(x)1.3 - x(5.6 ×10-10)(1.3 - x) = x2x2 + 5.6 ×10-10 x - 7.28×10-10 = 0


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Problem Details

When excess solid Mg(OH)2 is shaken with 1.00 L of 1.3 M NH4Cl solution, the resulting saturated solution has pH = 9.10. Calculate the Ksp of Mg(OH)2.

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Based on our data, we think this problem is relevant for Professor Phillips' class at VANDERBILT.