4. A proprietary reactor uses chemicals A and B and forms a...

4. A proprietary reactor uses chemicals A and B and forms a desired product C, and an undesired side product D. a. Calculate the percent conversion of A (5 pts) b. Calculate the yield of C (5 pts) c. Calculate the selectivity of C (5 pts) d. Calculate the percent excess of B. (5 pts) A + B ? 2C A + 2B ? D A 8.15 mass% B 32.58 mass% C 45.25 mass% D 14.02 mass% Species SG MW A 1.42 24 B 0.82 18 C 1.12 42 D 1.21 60

Transcript

00:01 Welcome here in this question we have a reaction a is giving rise to a plus b is giving rise to 2c and a plus 2b giving rise to d so here a and b are giving and here a is present in the product side 1 .5 mass percent and b is given 32 .58 mass percent is there and c is 45 .25 mass percent and d is 12 14 .02 mass percent is given and molar mass of this one is given as 24 per a and 18 for b and 42 for c and 60 for d so we have to find out the total moles of calculate the percent conversion of a b and yield of c the select and the percent excess of be given in the information below we have to find out so here we will find out the number of moles of a present in number of moles of a present in the product side is equal to so 100 grams is a product so that there is under in the 100 grams 8 .5 is present a so 8 .5 grams divided by 20 then it is equal to here the number of moles of a is 0 .34.

01:41 And here number of moles of b is 32 .58 divided by 18.

01:48 Then it is equal to 1 .8 1 moles and c is 45 .25 divided by 42 that is 1 .08.

01:58 And d is 14 .02 divided by 60 then it is equal to 0 .3 moles now the percentage of a so that is produced from the a plus b giving rise to c the reaction here the number of moles of a number of moles of a consumed is equal to number of moles of a consumed is equal to number of moles of of b consumed is equal to number of moles of c so this is half of the number of moles of c half one by two number of moles of c half of c so here from this one here b consumed is equal to a consumed that is equal to so number of moles of b consumed is equal to 0 .18 divided by c is due 0 .2 here c is produced so then it is equal to 0 .5 4 is a amount of c a consumed and c produced so a is equal to among total moles of a a consumed is equal to so from d also we will calculate right so here from a plus a plus to b is equal to d so here amount of a consumed is equal to is equal to amount of uh d produced is equal to half of half is two multiplied by two m two times of de formed is de formed is amount of be formed be consumed so we will calculate a consumed is equal to how much it is produced 0 .3 moles, a is consumed, and how much b is consumed 2 multiplied by 0 .3.

04:21 So, 2, 3, that is equal to 0 .46 is the amount of b consumed...

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