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Câu hỏi: Cho sơ đồ các phản ứng sau:
(a) ${{X}_{1}}+{{H}_{2}}O\xrightarrow[\text{co.mang.ngan}]{\text{ dien.phan.dung.dich}}{{X}_{2}}+{{X}_{3}}+{{H}_{2}}$
(b) ${{X}_{2}}+{{X}_{4}}\to CaC{{O}_{3}}+N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O$
(c) ${{X}_{2}}+{{X}_{3}}\to {{X}_{1}}+{{X}_{5}}+{{H}_{2}}O$
(d) ${{X}_{4}}+{{X}_{6}}\to CaS{{O}_{4}}+N{{a}_{2}}S{{O}_{4}}+C{{O}_{2}}+{{H}_{2}}O$
Các chất X5, X6 thỏa mãn sơ đồ trên lần lượt là:
A. NaClO, H2SO4.
B. Ba(HCO3)2, NaHSO4.
C. Ca(HCO3)2, H2SO4.
D. NaClO, NaHSO4.
(a) ${{X}_{1}}+{{H}_{2}}O\xrightarrow[\text{co.mang.ngan}]{\text{ dien.phan.dung.dich}}{{X}_{2}}+{{X}_{3}}+{{H}_{2}}$
(b) ${{X}_{2}}+{{X}_{4}}\to CaC{{O}_{3}}+N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O$
(c) ${{X}_{2}}+{{X}_{3}}\to {{X}_{1}}+{{X}_{5}}+{{H}_{2}}O$
(d) ${{X}_{4}}+{{X}_{6}}\to CaS{{O}_{4}}+N{{a}_{2}}S{{O}_{4}}+C{{O}_{2}}+{{H}_{2}}O$
Các chất X5, X6 thỏa mãn sơ đồ trên lần lượt là:
A. NaClO, H2SO4.
B. Ba(HCO3)2, NaHSO4.
C. Ca(HCO3)2, H2SO4.
D. NaClO, NaHSO4.
X5; X6 là NaClO, NaHSO4.
$\begin{aligned}
& (a) NaCl+{{H}_{2}}O\xrightarrow[cmn]{dp\text{dd}}NaCl+C{{l}_{2}}\uparrow +{{H}_{2}} \\
& (b) 2NaOH+Ca{{(HC{{O}_{3}})}_{2}}\to CaC{{O}_{3}}\downarrow +N{{a}_{2}}C{{O}_{3}}+2{{H}_{2}}O \\
& (c) NaOH+C{{l}_{2}}\to NaCl+NaClO+{{H}_{2}}O \\
& (d) Ca{{(HC{{O}_{3}})}_{2}}+2NaHS{{O}_{4}}\to CaS{{O}_{4}}+N{{a}_{2}}S{{O}_{4}}+2C{{O}_{2}}+2{{H}_{2}}O \\
\end{aligned}$
$\begin{aligned}
& (a) NaCl+{{H}_{2}}O\xrightarrow[cmn]{dp\text{dd}}NaCl+C{{l}_{2}}\uparrow +{{H}_{2}} \\
& (b) 2NaOH+Ca{{(HC{{O}_{3}})}_{2}}\to CaC{{O}_{3}}\downarrow +N{{a}_{2}}C{{O}_{3}}+2{{H}_{2}}O \\
& (c) NaOH+C{{l}_{2}}\to NaCl+NaClO+{{H}_{2}}O \\
& (d) Ca{{(HC{{O}_{3}})}_{2}}+2NaHS{{O}_{4}}\to CaS{{O}_{4}}+N{{a}_{2}}S{{O}_{4}}+2C{{O}_{2}}+2{{H}_{2}}O \\
\end{aligned}$
Đáp án D.