a) Zn + 2HCl → ZnCl2 + H2
b) \(\dfrac{sốnguyêntửZn}{sốphântửHCl}=\dfrac{1}{2}\)
\(\dfrac{sốnguyêntửZn}{sốphântửZnCl_2}=\dfrac{1}{1}\)
\(\dfrac{sốnguyêntửZn}{sốphântửH_2}=\dfrac{1}{1}\)
a) Zn + 2HCl \(\rightarrow\) ZnCl2 + H2
b)\(\dfrac{\text{số ntử Zn}}{\text{số ptử HCl}}=\dfrac{1}{2}\)
\(\dfrac{\text{số ntử Zn}}{\text{số ptử H_2}}=\dfrac{1}{1}\)
\(\dfrac{\text{số ntử Zn}}{\text{số ptử ZnCl_2}}=\dfrac{1}{1}\)