Solubility product of silver bromide is 5.0 $\times$ 10–13. The quantity of potassium bromide (molar mass taken as 120g of mol–1) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is :

Question

Solubility product of silver bromide is 5.0 $\times$ 10^–13. The quantity of potassium bromide (molar mass taken as 120g of mol^–1) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is :

1.2 $\times$ 10^–10 g

1.2 $\times$ 10^–9 g

6.2 $\times$ 10^–5 g

5.0 $\times$ 10^–8 g

Solution

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