Question

Napisz w formie cząsteczkowej i jonowej.
a) Wodorotlenek magnezu + kwas siarkowodorowy

b) Zasada barowa + kwas azotowy (V)

Answer 1

a)Mg(OH)2+H2S--->MgS+2H2O

Mg2+ +2OH- +2H+ +S2- --->Mg2+ +S2- +2H2O

2OH- +2H+ --->2H2O

OH- +H+ --->H2O

b)Ba(OH)2+2HNO3--->Ba(NO3)2+2H2O

Ba2+ +2OH- +2H+ +2NO3---->Ba2+ +2NO3- +2H2O

2OH- +2H+ --->2H2O

OH- +H+ --->H2O

Answer 2

a)

 

Mg(OH)₂+H₂S⇒MgS+2H₂O

Mg²⁺+2OH⁻+2H⁺+S²⁻⇒Mg²⁺+S²⁻+2H₂O

2OH⁻+2H⁺⇒2H₂O / :2

OH⁻+H⁺⇒H₂O

 

b)

 

Ba(OH)₂ + 2HNO₃ ⇒ Ba(NO₃)₂ + 2H₂O

Ba²⁺+2OH⁻+2H⁺+2NO₃⁻⇒Ba²⁺+2NO₃⁻+2H₂O

2OH⁻+2H⁺⇒2H₂O / :2

OH⁻+H⁺⇒H₂O