8. Silver ion is found with an average concentration of 28 ppb in U.S. water supplies....

8. Silver ion is found with an average concentration of 28 ppb in U.S. water supplies. (Assume the density of water is 1.0 g/cm3) a) What is the molarity of the silver ion?

Expert Solution

Given the average concentration of silver is 28 ppb = 28 x0.001 mg/L Since 1 ppb = 0.001 mg/L

= 0.028 mg/L

= 0.028x10^-3 g/L

Molar mass of silver is 107.9 g/mol

So number of moles of silver ion is = mass/molar mass

= (0.028x10^-3 g) / (107.9 g/mol)

= 2.59x10^-7 mol

So Molarity of silver ion , M = Number of moles / Volume of solution in L

= 2.59x10^-7 mol / 1L

= 2.59x10^-7 M

queen_honey_blossom answered 2 years ago

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