The sulfate ion level in a municipal water supply is given as 46.0ppm . What is [SO2?4]...

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Chemistry

The sulfate ion level in a municipal water supply is given as46.0ppm .

What is [SO2?4] in this water? in units M

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3.9 Ratings (406 Votes)

Given the level of sulfate ion is 46.0 ppm

                                                = 46.0 mg / L

Molar mass of sulfate ion , SO42- is = At.mass of S + (4xAt.mass of O )

                                                         = 32 + (4x16)

                                                         = 96 g/mol

So the concentration of sulfate ion is = [SO42- ] = 46.0 mg / L

                                                                           = 46.0x10-3 g / L   Since 1g = 103 mg

                                                                           = 46.0x10-3 gx(1/96)(mol/g) /L

                                                                           = 4.79x10-4 mol/L

                                                                           = 4.79x10-4 M


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