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Câu hỏi: Cho các dung dịch riêng biệt: HNO3, Ba(OH)2, NaHSO4, H2SO4, NaOH. Số dung dịch tác dụng với dung dịch Ba(HCO3)2 tạo kết tủa là
A. 1
B. 3
C. 4
D. 2
A. 1
B. 3
C. 4
D. 2
$HN{{O}_{3}}+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to Ba{{\left( N{{O}_{3}} \right)}_{2}}+C{{O}_{2}}+{{H}_{2}}O$
Ba(OH)2 $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaC{{O}_{3}}+{{H}_{2}}O$
NaHSO4 $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaS{{O}_{4}}+N{{a}_{2}}S{{O}_{4}}+C{{O}_{2}}+{{H}_{2}}O$
H2SO4 $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaS{{O}_{4}}+C{{O}_{2}}+{{H}_{2}}O$
NaOH $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaC{{O}_{3}}+N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O$
Ba(OH)2 $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaC{{O}_{3}}+{{H}_{2}}O$
NaHSO4 $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaS{{O}_{4}}+N{{a}_{2}}S{{O}_{4}}+C{{O}_{2}}+{{H}_{2}}O$
H2SO4 $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaS{{O}_{4}}+C{{O}_{2}}+{{H}_{2}}O$
NaOH $+Ba{{\left( HC{{O}_{3}} \right)}_{2}}\to BaC{{O}_{3}}+N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O$
Đáp án C.