Question

Determinati volumul de solutie de NaOh 3 M care neutralizeaza produsii de reactie rezulati prin hidroliza a 360 de g de aspirina daca randamentul hidrolizei este 100%.
Raspunsul e 2 L

Answer 1

Aspirina(acidul acetilsalicilic)
hidroliza aspirinei conduce la acid salicilic si acid acetic
180g................................................1mol.......................1mol
HOOC-C6H4-O-CO-CH3 + H2O -> HOOC-C6H4-OH + CH3-COOH
360g.........................................x=2moli.........................x=2moli
1mol.........................2moli
COOH-C6H4-OH + 2NaOH -> NaOOC-C6H4-ONa + 2H2O
2moli.... .................y=4moli
1mol...............1mol
CH3-COOH + NaOH -> CH3-COONa + H2O
2moli.............x=2moli
total:6moli NaOH
Cm=n/Vs => Vs=n/Cm=6/3=2L