Chemistry Balancing formation of Perovskite solar cell components

[Mayhem]

Homework Statement

Balance $\mathrm{\ CH_3NH_3PbBr_3+ CH_3NH_3PbI_3 \rightarrow CH_3NH_3Pb(I_{1-x}Br_x)_3}$

Relevant Equations

None

I don't understand the 1-x notation, as for all x, there wouldnt be an x such that bromide and iodide exists in the final product. i.e. for x = 0, the number of bromide would be 1, for x = 1, bromide would be one, for x > 1, we would achieve a negative amount of iodide, and thus this makes no conceptual sense.

How do I go about balancing this?

 

[Borek]

x is not an integer, it is a real number from the <0..1> range.

What you have on the right is not a single molecule, more like a bulk mixture.

 

[Mayhem]

x is not an integer, it is a real number from the <0..1> range.

What you have on the right is not a single molecule, more like a bulk mixture.

Ah, makes sense then. I take it that it can be balanced by x and 1-x as coefficients then.

 

[DrDu]

The "NH3" is interesting.

 

[Mayhem]

The "NH3" is interesting.

It's a methyl ammonium halide.