- #1
AJKing
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Homework Statement
What molar concentration of each ion appear in 0.16M Pb(NO3)2?
*Note* The title incorrectly says "moles".
Homework Equations
M = mol/L
The Attempt at a Solution
My teacher tells me this is wrong, but I can't see my fault:
Molar Mass of Pb+2 = 207.20g
Molar Mass of NO3- = 124.02g
[itex]\frac{x}{1L} = 0.16M[/itex]
[itex]x = 0.16mol[/itex]
[itex]0.16mol = \frac{y*1mol}{331.22g}[/itex]
[itex]y = 53g[/itex][itex]Pb: 53g * \frac{207.20g}{331.22g} = 33g[/itex]
[itex]\frac{33g}{331.22g} = 0.10mol[/itex][itex]NO_{3}: 53g *\frac{124.02}{331.22g} = 20g[/itex]
[itex]\frac{20g}{331.22g} = 0.06mol[/itex][itex]Pb = \frac{0.10mol}{1L} = 0.10M[/itex]
[itex]NO_{3} = \frac{0.06mol}{1L} = 0.06M[/itex]
Any ideas where I messed up?
Or if I did?
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