100cc of gas is collected over water at 15^@C and 750torr. If the gas occupies 91.9 mL in dry state at STP, find the aqueous tension at STP.

100cc of gas is collected over water at 15^@C and 750torr. If the gas

1.	100cc of gas is collected over water at 15^@C and 750torr. If the gas occupies 91.9 mL in dry state at STP, find the aqueous tension at STP.
Answer» SOLUTION :Let aqueous tension at `15^(@)C`is .f. `{:("GIVEN conditions",,"STP conditions"),(P_(1) = (750-f)"mm",,P_(2) = 760"mm"),(V_(2) = 100 "mL",,V_(2) = 91.9"mL"),(T_(1) = 288"K",,T_(2) = 273 "K"):}` APPLYING equation of state at two conditions, `(P_(1)V_(1))/(T_(1)) = (P_(2)V_(2))/(T_(2)) = ((750-f) xx100)/(288) = (760 xx 91.9)/(273)` ` = 750-f = 736.8` Aqueous tension .f. at `15^(@)C = 750-736.8 = 13.2` mm