It would deped on two things.
1. Wether or not the chain has s rollers of r rollers. S are a standard size roller and R are an oersized roller.
2. The size of the sprocket you have.
2050 chain has the same dimensions as a 50 chain excet it is a double pitch. chich means all dimensions are the same except it only has half as many rollers. If it has s rollers, it will work on larger 50 sprockets. Because the pitch is doubled, you will only catch every other tooth on the sprocket. It doesn't work well with smaller sprockets. I think it is 30 tooth and larger can use a standard #50 sprocket. If the chain has the R oversized rollers, then you would need a special sprocket.