Question

{List of RAM: Fe=56, CI= 35.5, H=1, O=16, C=12, Na= 23, S= 32, N= 14}
1. Aspirin (C,H,O,) is produced from salicylic acid (C,H,O3) according to the equation below.
2 C,H,O, + C,H,O, — 2 CHO + H2O. What mass of water is produced when 540 g of aspirin
are produced?
l​

Answer 1

Answer:

For aspirin, 1 gram = 15.5 grains.

5 grains =5×

15.5

1

=0.32 gram

The molar mass of aspirin, MM

aspirin

=180 g/mol.

180 g = 1 mol .

For one 5 grains tablet of aspirin 0.32 g =

180

0.32

=0.0018 mol

0.0018 moles of aspirin are obtained from 0.0018 moles of salicylic acid.

Hence, for 6 tablets the moles of salycilic acid = 6×0.0018=0.01 moles.