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What class of reaction occurs when you add SnCl2 to a mixture of Fe(NO3)3 and NH4SCN?...

What class of reaction occurs when you add SnCl2 to a mixture of Fe(NO3)3 and NH4SCN? What is the net ionic equation of the chemical reaction that causes the equilibrium shift as well?

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Answer #1

A reduction reaction occurs.

Tin(II) reduces Fe(III) to Fe(II). Hence the concentration of Fe(III) decreases. So according to Le Chatelier principle, More ferric thiocyanate will dissociate to form Fe(III).

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