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a. 25 mL of sample of saturated solution...

a. `25 mL` of sample of saturated solution of `PbI_(2)` requires `10mL` of a certain `AgNO_(3)(aq)` for its titration. What is the molarity of this `AgNO_(3)(aq)? K_(sp)` of `PbI_(2) = 4 xx 10^(-9)`.
b. `M(OH)x` has `K_(sp) = 27 xx 10^(-12)` and solubility in water is `10^(-3)M`. Calculate the value of `x`.

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Let's solve the question step by step. ### Part a: Molarity of AgNO₃ 1. **Dissociation of PbI₂**: The dissociation of lead(II) iodide (PbI₂) in water can be represented as: \[ PbI_2 (s) \rightleftharpoons Pb^{2+} (aq) + 2I^{-} (aq) ...
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