Răspuns:
c mdx100/ms----> m,d=30x10/100g=3gNaOH
miu.NaOH= 40g/mol
miu,H2SO4=98g/mol
2x40g..............98g
2NaOH + H2SO4--->Na2SO4 + H2O
3g.........................x=
x=m=3,675gH2SO4
m,sol,acid= v X ro=10ml x 1,225g/ml= 12,25 g sol 1ml= 1cm³
12,25g sol.........3,675g acid
100g..sol...................x (definitia concentratiei procentuale)
x=c=30%
Explicație:
