Question: 100 kg of inert solid (B) containing 33% soluble component (A) by mass is extracted with 20 m 3 of water. The saturation concentration is

100 kg of inert solid (B) containing 33% soluble component (A) by mass is extracted with 20 m³ of water. The saturation concentration is 3.2 kg/m³. (k'A/b=0.15 m³/s). Find the solute concentration after 50 seconds and the time required for all the solute to dissolve.

a) 1.38 kg/m³; 86.7s

b) 1.22 kg/m³; 96.7s

c) 1.0 kg/m³: 96.7h

d) 1.0 kg/m³; 86.75

e) 1.38 kg/m³; 96.7s

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