`n_{(C_17H_35COO)_3C_3H_5}=(17,8)/890=0,02\ (mol)`

PTHH: `(C_17H_35COO)_3C_3H_5+3NaOH\to 3C_17H_35COONa+C_3H_5(OH)_3`

a,

Theo phương trình:

`n_{C_17H_35COONa}=3n_{(C_17H_35COO)_3C_3H_5}=0,06\ (mol)`

`\to m_{C_17H_35COONa}=0,06.306=18,36\ (g)`

b,

Theo phương trình:

`n_{C_3H_5(OH)_3}=n_{(C_17H_35COO)_3C_3H_5}=0,02\ (mol)`

`\to m_{C_3H_5(OH)_3}=0,02.92=1,84\ (g)`