HSC - রসায়ন ২য় পত্র→অধ্যায়-০৪ঃ তড়িৎ রসায়ন→All Topics

$\begin{array}{l} \text { (i) } \mathrm{Al}(\mathrm{s}) / \mathrm{Al}^{3+}(\mathrm{aq}) ~ H \mathrm{X}^{2+} / \mathrm{X}(\mathrm{s}) \\ \text { (ii) } \mathrm{Al}(\mathrm{s}) / \mathrm{Al}^{3+}(\mathrm{aq}) \| \mathrm{Y}^{2+}(\mathrm{aq}) / \mathrm{Y}(\mathrm{s}) \\ \mathrm{E}_{\mathrm{X} / \mathrm{x}^{2+}}^{0}=+0.14 \mathrm{~V}, \mathrm{E}_{\mathrm{AVAl}^{0+}}^{0}=+1.66 \mathrm{~V} \text {; } \\ \mathrm{E}_{\mathrm{Y} / \mathrm{Y}^{2+}}^{0}=+0.25 \mathrm{~V} \\ \end{array}$