tists_LEC_1 Chemistry for Earth Scientists-LEC-1-2017 WINTER part 1 of 2) s 15 O

Question

tists_LEC_1 Chemistry for Earth Scientists-LEC-1-2017 WINTER part 1 of 2) s 15 October-21 October You are testing a solution for the presence of sulfate anions. As a observation and reaction reference you test it before with a known solution of sodium sulfate. The reaction equation is: Na2SO4 + BaCl2 2 NaCl + Baso, onYou think that this would be a good way of creating sodium chioride, the salt everybody is using for cooking Sodium sulfate costs 82.16 $ per ton and barium chloride costs 18.01 $ per kilogram. You expect that everything will react with 100% efficiency, what price in dollar would have a ton of your created sodium chloride at least? Data: barium chloride : M = 208.23 g/mol sodium chloride: M = 58.44 g/mol sodium sulfate: M = 142.04 g/mol Answer: Check

Explanation / Answer

ratio is

1 mol of Na2SO4 and 1 mol of BaCl2

then

142.04 g of Na2SO4 + 208.23 g

change to ton

142.04 ton of Na2SO4 + 208.23 ton BaCl2

change to SD

142.04*82.16 + 208.23 *18.01 = 15420.23 USD required

this will give --> 2 mol of NaCl --> 2*(58.44) = 116.88 ton

that is:

15420.23 USD required = 116.88 ton of NaCl

$ of NaCl per ton = 15420.23 /116.88 = $ 131.93 USD per ton

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