Răspuns :
[tex]H_{2}SO_{4} + 2NaOH -> Na_{2}SO4 + 2H_{2}O[/tex]
1 mol H2SO4 reacţionează cu .................... 2 moli NaOH
5 kmoli H2SO4 .............................................. x= 10 kmoli NaOH
Aplicăm concentraţia de 20%:
[tex]10 \ kmoli * \frac{100}{20} = 50 \ kmoli \ NaOH = 2000 \ kg \ NaOH[/tex]
1 mol H2SO4 reacţionează cu .................... 2 moli NaOH
5 kmoli H2SO4 .............................................. x= 10 kmoli NaOH
Aplicăm concentraţia de 20%:
[tex]10 \ kmoli * \frac{100}{20} = 50 \ kmoli \ NaOH = 2000 \ kg \ NaOH[/tex]
2 NaOH + H2SO4 ---> Na2SO4 + 2 H2O
1 mol H2SO4........2*40 g NaOH
5 kmoli H2SO4.........x kg NaOH x = 400 kg NaOH
c%=md/ms*100=>ms=md/c*100=400*100/20=2000 kg NaOH
masa molara NaOH = 23+16+1=40g/mol
masa molara H2SO4 = 2*1+32+4*16=98 g/mol
1 mol H2SO4........2*40 g NaOH
5 kmoli H2SO4.........x kg NaOH x = 400 kg NaOH
c%=md/ms*100=>ms=md/c*100=400*100/20=2000 kg NaOH
masa molara NaOH = 23+16+1=40g/mol
masa molara H2SO4 = 2*1+32+4*16=98 g/mol