Calcium carbide is considered to be a potential fuel in a basic oxygen converter and would be expected to burn into CaO and CO or C0?, depending upon the conditions. If the heat required to raise steel scrap to 1600°C (1873 K) is 333 kcal/kg (1,393.27 hi/kg) of scrap, calculate how many kg of steel scrap can be charged per 1000 kg of CaC2 when
( i ) all CaC2 is consumed to form CO,
( i i ) all CaC2 is consumed to form C02, and
( i i i ) 60% of CaC2 is u t i l i z ed to produce C02 and rest for CO.
Assume that reaction takes place at 25°C (298 K).
Given: (i) ΔΗ° 2 9 8 CaC = ~ 1 4 · Ί kcal/mole (-58.99 kJ/mol).
( i i ) ΔΗ°2 9 8 Ca0 = -151.8 kcal/mole (-635.13 kJ/mol).
( i i i ) ΔΗ°298 c o = -26.42 kcal/mole (-110.54 kJ/mol).
(iv) ΔΗ°298 CO = -94.05 kcal/mole (-393.50 kJ/mol).
(v) Atomic weights of Ca and C are 40 and 12 respectively.