Question

HELP.

Answer 1

To start off \(60^oC\) is 140 F.

We have to use the solubilities to find the temp.

At 140 F we have 14.1 g for every 100 g of solution

so in a vat of 10 000 kg, there are 10 000*0.141=1410 kg of solute

we want 500 kg out of it, so we want 1410-500=910 kg of solute to remain in solution

\(\dfrac{1410~kg}{14.1\%}=\dfrac{910~kg}{x}\rightarrow x=9.1\%\)

we want a temperature to give us the solubility of 9.1% w/w

Find that temp