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23) Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and in the producti

Posted: Thu Jun 09, 2022 9:57 am
by answerhappygod
23) Hydrogen fluoride is used in the manufacture of Freons
(which destroy ozone in the stratosphere) and in the production of
aluminum metal. It is prepared by the reaction CaF2 + H2SO4 → CaSO4
+ 2HF In one process, 5.75 kg of CaF2 is treated with an excess of
H2SO4 and yields 2.85 kg of HF. Calculate the percent yield of HF.
% yield