Question

What reaction number requires NH4Cl?

Answer 1

I don't know what the question is, and what the answer choices are. Can you elaborate?

Answer 2

Yeah, but like you, I don't know what it's asking for..

Answer 3

Notice that F and K are even and odd on the left, the coefficient of potassium phosphate has to be even. Try and even number (2) and see what happens

Answer 4

Oh, your just suppose to balance this?

Answer 5

It's just asking you to balance the double replacement reaction.

Answer 6

Good eyes @NoelGreco

Answer 7

Make both sides have the same amount of
Ba
F
K
PO4

Any co efficient you use will multiply the subscript of an element (if it has one)

Answer 8

Can't be, if there's a 2 already on the first compound BaF2, that is only 2 Ba's and the products already have 3.

Answer 9

I'll give you a hint. The reactants will be 3, 2

Figure out the products

Answer 10

Note that the parenthesis on the 3rd compound won't be affected by a co efficient

Answer 11

The 3rd compound is 1, yes

Answer 12

Now just get the last one