Odpowiedź :
1. 2 NaOH + H2SO4---> Na2SO4 + 2 H2O
2. 2 Na + H2SO4---> Na2SO4 + H2
3. Na2O + SO3---> Na2SO4
2 NaOH+SO3--->Na2SO4+H2O
Na2O+H2SO4--->Na2SO4+H2O
2NaOH+H2SO4--->Na2SO4+2H2O
1. 2 NaOH + H2SO4---> Na2SO4 + 2 H2O
2. 2 Na + H2SO4---> Na2SO4 + H2
3. Na2O + SO3---> Na2SO4
2 NaOH+SO3--->Na2SO4+H2O
Na2O+H2SO4--->Na2SO4+H2O
2NaOH+H2SO4--->Na2SO4+2H2O