1. When 22.0 mL of a 4.07×10-4M sodium sulfide solution is combined with 15.0 mL of...
1. When 22.0 mL of a
4.07×10-4M sodium
sulfide solution is combined with 15.0 mL
of a 4.60×10-4M nickel(II)
bromide solution does a precipitate form? (yes
or no)
For these conditions the Reaction Quotient, Q, is equal to ____
2. When 15.0 mL of a
6.77×10-4M sodium
carbonate solution is combined with 22.0
mL of a 6.39×10-4M lead
nitrate solution does a precipitate form? (yes
or no)
For these conditions the Reaction Quotient, Q, is equal to ___
Homework Answers
1)
Let us consider a reaction,
Ni+2 + S-2 -----> NiS
Ksp = 13.27 * 10^-11
Q = [Ni+2] [S-2]
[S-2] = M V / Total volume
= 22 *(4.07 * 10 ^-4 )/ (22+15)
= 0.000242
[Ni+2] = M V /Total volume
= (15 * 4.60*10^-4)/ 37
= 0.000186
Q = [Ni+2][S-2]
= 0.000186 * 0.000242
Q = 4.5 * 10-8
Q << Ksp. Therefore, precipitation does not occurs ( NO)
Add Answer to:
1. When 22.0 mL of a
4.07×10-4M sodium
sulfide solution is combined with 15.0 mL
of...
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1. When 18.0 mL of a 5.31×10-4M sodium hydroxide solution is combined with 18.0 mL of a 1.94×10-4M silver fluoride solution does a precipitate form? (yes or no) b. For these conditions the Reaction Quotient, Q, is equal to? 2. When 18.0 mL of a 9.15×10-4 M calcium chloride solution is combined with 22.0 mL of a 2.60×10-4 M potassium carbonate solution does a precipitate form? (yes or no) b. For these conditions the Reaction Quotient, Q, is equal to?
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