1.75 g of solid NaOH is added to 0.25 dm3 of 0.1 M NiCl2 solution. Calculate mass in grams of Ni(OH)2 forms (as nearest integer).
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Solution
2NaOH+NiCl2⟶Ni(OH)2+2NaCI Mole before reaction 1.7540 0.25 x 0.1 =0.0438=0.025 Mole left 0 (0.0250.04382)0.04382 0.0438 ∴ Mole of Ni(OH)2 formed =0.04382 ∴ wt. of Ni(OH)2 solution=0.04382×92.6=2.0279g