a)
2KOH + H₂S ---> K₂S + 2H₂O
2K⁺ + 2OH⁻ + 2H⁺ + S²⁻ ---> 2K⁺ + S²⁻ + 2H₂O
2OH⁻ + 2H(+) ---> 2H₂O
b)
Ba(OH)₂ + H2S ---> BaS + 2H₂O
Ba²⁺ + 2OH⁻ + 2H⁺ + S²⁻ --->Ba²⁺ + S²⁻ + 2H₂O
2OH⁻ + 2H⁺ --->2H₂O
c)
KOH + HNO₃ ---> KNO₃ + H₂O
K⁺ + OH⁻ + H⁺ + NO₃⁻ ---> K⁺ + NO₃⁻ + H₂O
OH⁻ + H⁺ ---> H₂O
d)
Ba(OH)₂ + 2HNO₃ ---> Ba(NO₃)₂ + 2H₂O
Ba²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ --->Ba²⁺ + 2NO₃⁻ + 2H₂O
2OH⁻ + 2H⁺ ---> 2H₂O
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a)
2KOH + H₂S ---> K₂S + 2H₂O
2K⁺ + 2OH⁻ + 2H⁺ + S²⁻ ---> 2K⁺ + S²⁻ + 2H₂O
2OH⁻ + 2H(+) ---> 2H₂O
b)
Ba(OH)₂ + H2S ---> BaS + 2H₂O
Ba²⁺ + 2OH⁻ + 2H⁺ + S²⁻ --->Ba²⁺ + S²⁻ + 2H₂O
2OH⁻ + 2H⁺ --->2H₂O
c)
KOH + HNO₃ ---> KNO₃ + H₂O
K⁺ + OH⁻ + H⁺ + NO₃⁻ ---> K⁺ + NO₃⁻ + H₂O
OH⁻ + H⁺ ---> H₂O
d)
Ba(OH)₂ + 2HNO₃ ---> Ba(NO₃)₂ + 2H₂O
Ba²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ --->Ba²⁺ + 2NO₃⁻ + 2H₂O
2OH⁻ + 2H⁺ ---> 2H₂O