Объяснение:
S → Na2S → H2S → SO2 → Na2SO3 → CaSO3
Na; HCl ; O2 ;NaOН; Ca(OH)2
2Na + S → Na2S
Na2S + 2HCl → 2NaCl + H2S
2 H2S + 3 O2 → 2 SO2 + 2 H2O
2 NaOH + SO2 → H2O + Na2SO3
Ca(OH)2 + Na2SO3 → CaSO3 + 2NaOH
Объяснение:
S → Na2S → H2S → SO2 → Na2SO3 → CaSO3
Na; HCl ; O2 ;NaOН; Ca(OH)2
2Na + S → Na2S
Na2S + 2HCl → 2NaCl + H2S
2 H2S + 3 O2 → 2 SO2 + 2 H2O
2 NaOH + SO2 → H2O + Na2SO3
Ca(OH)2 + Na2SO3 → CaSO3 + 2NaOH