Câu hỏi của b. ong bong

Question

làm hộ mik bài 1,2,3 undefined

𝓓𝓾𝔂 𝓐𝓷𝓱 · Accepted Answer

1) PTHH: $2KOH+CO_2\rightarrow K_2CO_3+H_2O$

$Ba\left(OH\right)_2+CO_2\rightarrow BaCO_3+H_2O$

2) PTHH: $Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O$

$2Fe\left(OH\right)_3\xrightarrow[khôngcóoxi]{t^o}Fe_2O_3+3H_2O$

$2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O$

3)

(1) $CaCO_3\underrightarrow{t^o}CaO+CO_2$

(2) $CaO+H_2O\rightarrow Ca\left(OH\right)_2$

(3) $Ca\left(OH\right)_{2\left(dư\right)}+CO_2\rightarrow CaCO_3+H_2O$

(4) $CaO+2HCl\rightarrow CaCl_2+H_2O$

(5) $Ca\left(OH\right)_2+2HNO_3\rightarrow Ca\left(NO_3\right)_2+2H_2O$

Câu trả lời:

1) PTHH: $2KOH+CO_2\rightarrow K_2CO_3+H_2O$

$Ba\left(OH\right)_2+CO_2\rightarrow BaCO_3+H_2O$

2) PTHH: $Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O$

$2Fe\left(OH\right)_3\xrightarrow[khôngcóoxi]{t^o}Fe_2O_3+3H_2O$

$2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O$

3)

(1) $CaCO_3\underrightarrow{t^o}CaO+CO_2$

(2) $CaO+H_2O\rightarrow Ca\left(OH\right)_2$

(3) $Ca\left(OH\right)_{2\left(dư\right)}+CO_2\rightarrow CaCO_3+H_2O$

(4) $CaO+2HCl\rightarrow CaCl_2+H_2O$

(5) $Ca\left(OH\right)_2+2HNO_3\rightarrow Ca\left(NO_3\right)_2+2H_2O$

Trần Mạnh · Answer

PTHH:

$Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O$

$2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O$

$2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O$

Câu trả lời:

PTHH:

$Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O$

$2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O$

$2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O$