Cho các phản ứng sau: (a) c + NaOH dư →, (b) NO2+KOH, A. a, d, e, f

* Hướng dẫn giải

Chọn đáp án D

a,c,d,f

$\left(a\right) C{O}_2+2NaOH dư\to N{a}_{2}C{O}_3+H_{2}O$

$\left(b\right) 2N{O}_2+2KOH\to KN{O}_2+KN{O}_3+H_{2}O$

$\left(c\right) 2AlC{l}_3+3N{a}_{2}C{O}_3+3H_{2}O\to 2Al{\left(OH\right)}_3+6NaCl+3C{O}_2$

$$\begin{gathered} \left(d\right) 2KHC{O}_3+Ba{\left(OH\right)}_2 dư\to BaC{O}_3+K_{2}C{O}_3+2H_{2}O \\ {K}_{2}C{O}_3+Ba{\left(OH\right)}_2\to BaC{O}_3+2KOH \end{gathered}$$

$\left(e\right) AlC{l}_3+4KOH dư\to 3KCl+KAl{O}_2+H_{2}O$

$\left(f\right) 2NaCl+2H_{2}O\stackrel{DDPDDD,MNX}{\to }2NaOH+H_2+C{l}_2$