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Q.

Calcium hydroxide is a strong base. Compute [Ca2+] and [OH–] for a solution that is prepared by dissolving 0.60 g of Ca[OH]2 in enough water to make a 1500 mL of solution [Atomic weights : Ca = 40, O = 16, H = 1]

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a

8.1×10–3, 8.1×10–3

b

5.4×10–3, 5.4×10–3   

c

5.4×10–3, 1.08×10–2

d

5.4×10–3, 9.1×10–13   

answer is B.

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Detailed Solution

Ca(OH)2=0.674×1.5=Ca+2=5.4×10-3

OH-=2×0.6074×1.5=1.08×10-2

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