Hoàn thành PTHH sau : a, Na + H2O —> NaOH + H2 b, P2O5 +H2O —> H3PO4 c, Al + H2SO4 —> Al2(SO4)3 + H2 d, NaOH + FeCl3 —> NaCl + Fe (OH)3 e, Ca(OH)2 + Fe2(SO4)3 —> Fe(OH)3 + CaSO4
Hoàn thành PTHH sau : a, Na + H2O —> NaOH + H2 b, P2O5 +H2O —> H3PO4 c, Al + H2SO4 —> Al2(SO4)3 + H2 d, NaOH + FeCl3 —> NaCl + Fe (OH)3 e, Ca(OH)2 + Fe2(SO4)3 —> Fe(OH)3 + CaSO4
\(\begin{array}{l}
a)2Na + 2{H_2}O – > 2NaOH + {H_2}\\
b){P_2}{O_5} + 3{H_2}O – > 2{H_3}P{O_4}\\
c)2Al + 3{H_2}S{O_4} – > A{l_2}{(S{O_4})_3} + 3{H_2}\\
d)3NaOH + FeC{l_3} – > Fe{(OH)_3} + 3NaCl\\
e)3Ca{(OH)_2} + F{e_2}{(S{O_4})_3} – > 2Fe{(OH)_3} + 3CaS{O_4}
\end{array}\)
Đáp án:
Giải thích các bước giải:
`a, 2Na + 2H_{2}O → 2NaOH + H_{2}`
`b, P_{2}O_{5} +3H_{2}O → 2H_{3}PO_{4}`
`c, 2Al + 3H_{2}SO_{4}→ Al_{2}(SO_{4})_{3} + 3H_{2}`
`d, 3NaOH + FeCl_{3} → 3NaCl + Fe (OH)_{3}`
`e, 3Ca(OH)_{2} + Fe_{2}(SO_{4})_{3} → 2Fe(OH)_{3} + 3CaSO_{4}`