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When 18.0 mL of a 1.21×10-4 M sodium hydroxide solution is combined with 15.0 mL of a 8.16×10-4 M...

When 18.0 mL of a 1.21×10-4 M sodium hydroxide solution is combined with 15.0 mL of a 8.16×10-4 M calcium chloride solution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to

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Answer #1

Yes,

Q = [Ca​​​​​2+][OH​​​​​-]2

= [18.0×1.21×10-4/33.0)2][ (8.16×15×10-4/33)

= 1.62×10-12

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