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leibd000
Jun 17, 2009, 08:56 AM
what is the name of the equation, and how do I balance the following:

NaCl +F2 - NaFCl

H2 + O2 - H2O

AgNO3 + MgCl2

Perito
Jun 17, 2009, 11:50 AM
what is the name of the equation, and how do I balance the following:

NaCl +F2 - NaFCl

H2 + O2 - H2O

AgNO3 + MgCl2



NaCl + F_2 \rightarrow NaFCl

First, balance the metal (Na). As written, it's already balanced -- one Na on the left and one on the right. Then, look at the Cl. Again, as written, there's one on the left and one on the right. Finally, look at the F. You have two on the left, but only one on the right. Since the one on the left is an F2 molecule, take half a mole

NaCl + \frac 12 F_2 \rightarrow NaFCl

That's balanced. If you (or the teacher) don't like the 1/2, multiply everything by two:

2NaCl + F_2 \rightarrow 2NaFCl

That's also balanced.

You try it with

H_2 + O_2 \rightarrow H_2O

and

AgNO_3 + MgCl_2 \rightarrow Mg(NO_3)_2 + AgCl

Hint on the last one: Treat the "NO3" group as an inseparable entity (as if it were one atom).

I have no idea what you mean by "What is the name of the equation?". I guess I could name the equations after the three stooges, Curly, Larry, and Moe, and call the first equation Curly, the second equation Larry, and the third equation Moe, but I expect the assignment called for something else.