# How much platinum would be produced by passing a 2.0 ampere current through a solution of Pt^2+ for 30. minutes?

How much platinum would be produced by passing a 2.0 ampere current through a solution of Pt^2+ for 30. minutes? Answer much be in grams.

Please describe your answers clearly and include steps.

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- billrussell42Lv 71 month agoFavourite answer
1 amp = 1 coulomb/sec

charge = current x time = 2 amps x 30 min x 60s/min = 3600 coulombs

1 C = 6.242e18 electrons

3600 C x 6.242e18 electrons/C = 2.25e22 electrons

it takes 2 electrons to deposit 1 Pt atom, so 1.124e22 atoms of Pt

Pt is 195.1 g/mol

6.022e23 atoms/mole Avogadro constant

1.124e22 atoms x 1mole/6.022e23 atoms x 195.1 g/mol = 3.64 g

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