a. ta có CTHH: \(Cu^{II}_xCI_y^I\)
\(\rightarrow II.x=I.y\rightarrow\dfrac{x}{y}=\dfrac{I}{II}=\dfrac{1}{2}\rightarrow\left[{}\begin{matrix}x=1\\y=2\end{matrix}\right.\)
\(\rightarrow CTHH:CuCI_2\)
b. ta có CTHH: \(C_x^{IV}O^{II}_y\)
\(\rightarrow IV.x=II.y\rightarrow\dfrac{x}{y}=\dfrac{II}{IV}=\dfrac{1}{2}\rightarrow\left[{}\begin{matrix}x=1\\y=2\end{matrix}\right.\)
\(\rightarrow CTHH:CO_2\)
c. ta có CTHH: \(Fe^{III}_x\left(NO_3\right)^I_y\)
\(\rightarrow III.x=I.y\rightarrow\dfrac{x}{y}=\dfrac{I}{III}=\dfrac{1}{3}\rightarrow\left[{}\begin{matrix}x=1\\y=3\end{matrix}\right.\)
\(\rightarrow CTHH:Fe\left(NO_3\right)_3\)
d. ta có CTHH: \(Na^I_x\left(NO_3\right)^I_y\)
\(\rightarrow I.x=I.y\rightarrow\dfrac{x}{y}=\dfrac{I}{I}=\dfrac{1}{1}\rightarrow\left[{}\begin{matrix}x=1\\y=1\end{matrix}\right.\)
\(\rightarrow CTHH:NaNO_3\)
P/S: đây là giải theo cách đầy đủ, nếu ko thì bạn vt giống cj Karik-Linh cx đc!
