Question

Na2SO3+KIO3 -> I2+Na2SO4+K2SO4+H20 ОВР

Answer 1

       +4           +5                     0             +6

5Na2SO3 + 2KIO3 + H2SO4 = I2 + 5Na2SO4 + K2SO4 + H2O

S(+4) - 2е -----> S(+6)                      2              5

2I(+5)  + 2*5e ------> 2I(0)                10             1

S - восстановитель, окисляется

I - окислитель, восстанавливается

Answer 2

The balanced chemical equation for this reaction is:

2Na2SO3 + 2KIO3 → I2 + Na2SO4 + K2SO4 + H2O

This equation is balanced according to the law of conservation of mass, which states that atoms cannot be created or destroyed in a chemical reaction, only rearranged. The equation shows that two moles of sodium sulfite react with two moles of potassium iodate to produce one mole of iodine, one mole of sodium sulfate, one mole of potassium sulfate, and one mole of water.