Question: Hydrogen fluoride that is used to make freons (which destroy the stratospheric ozone layer), is prepared by the following reaction: CaF2 + H2SO4 CaSO4

Hydrogen fluoride that is used to make freons (which destroy the stratospheric ozone layer), is prepared by the following reaction:
CaF2 + H2SO4 → CaSO4 + 2 HF
If 200g of CaF are reacted with 500g of H2SO4. What is the limiting reagent?
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