# Chemistry

What is the standard concentration of FeSCN^2+ if 18mL of 0.200M Fe(NO3)3 were combined with 2mL of 0.0020M KSCN?

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1. KSCN + Fe^3+ ==> FeSCN^2+

KSCN = 0.2 x 18/20 = 0.18 M
Fe^3+ = 0.002 x 2/20 = 0.0002 M
So FeSCN^2+ must be 0.0002 M

You can make an ICE chart for that if you wish to see it better.
......KSCN + Fe^3+ ==> FeSCN^2+
I.....0.18...............0
C.-0.0002..-0.0002.....0.0002

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