A fluorine disposal plant was constructed to carryout the reactions: F_(2)+2NaOHrarr1/2O_(2)+2NaF+H_(2)O 2NaF+CaO+H_(2)OrarrCaF_(2)+2NaOH As the plant operated, excess lime was added to bring about complete precipitation of the fluoride as CaF_(2). Over a period of operation, 1900 kg of fluorine was fed into a plant and 10,000 kg of lime was required. What was the percentage utilisation of lime? [At, mass F=19], [Lime=CaO]

A fluorine disposal plant was constructed to carryout the reactions:

1.	A fluorine disposal plant was constructed to carryout the reactions: F_(2)+2NaOHrarr1/2O_(2)+2NaF+H_(2)O 2NaF+CaO+H_(2)OrarrCaF_(2)+2NaOH As the plant operated, excess lime was added to bring about complete precipitation of the fluoride as CaF_(2). Over a period of operation, 1900 kg of fluorine was fed into a plant and 10,000 kg of lime was required. What was the percentage utilisation of lime? [At, mass F=19], [Lime=CaO]
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