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Korvikt [17]
3 years ago
10

The molar solubility of ag2s is 1.26 × 10-16 m in pure water. calculate the ksp for ag2s.

Chemistry
1 answer:
MAXImum [283]3 years ago
6 0
Answer is: Ksp for silver sulfide is 8.00·10⁻⁴⁸.
Reaction of dissociation: Ag₂S(s) → 2Ag⁺(aq) + S²⁻(aq)<span>.
</span>s(Ag₂S) = s(S²⁻) = 1.26·10⁻¹⁶ M.
s(Ag⁺) = 2s(Ag₂S) = 2.52·10⁻¹⁶ M; equilibrium concentration of silver cations.
Ksp = s(Ag⁺)² · s(S²⁻).
Ksp = (2.52·10⁻¹⁶ M)² · 1.26·10⁻¹⁶ M.
Ksp = 6.35·10⁻³² M² · 1.26·10⁻¹⁶ M.
Ksp = 8.00·10⁻⁴⁸ M³.
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Charles law states that volume of gas is directly proportional to temperature at constant pressure 
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\frac{V1}{T1} =  \frac{V2}{T2}
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First, we should find the mole of KOH:
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Now, let's find the volume of HNO3 soln:
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The final answer is </span>(2) 20.0 mL.<span>

Also, this problem can also be done by using dimensional analysis. 

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