Calculate the potential of the electrochemical cell and determine if it is spontaneous as written at \( 25^{\circ} \mathrm{C} \). \[ \mathrm{Pt}(\mathrm{s})\left|\mathrm{Sn}^{2+}(0.0062 \mathrm{M}), \mathrm{Sn}^{4+}(0.11 \mathrm{M}) \| \mathrm{Fe}^{3+}(0.11 \mathrm{M}), \mathrm{Fe}^{2+}(0.0018 \mathrm{M})\right| \mathrm{Pt}(\mathrm{s}) \] \( E_{\mathrm{Sn}^{4+} / \mathrm{Sn}^{2+}}^{\circ}=0.154 \mathrm{~V} \quad E_{\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}}^{\circ}=0.771 \mathrm{~V} \)

5 What is meant by the term hygroscopic when referring to brake fluid?

What does word root indicate in IUPAC name? b. Write the suffix for doubly bonded \( (\mathrm{C}=\mathrm{C}) \) alcohol. c. Ifsame substituent is repeated thrice, which prefix is added to word root? \& Write IUPAC name of \( \mathrm{CH}_{3}-\mathrm{CH}(\mathrm{CI})-\mathrm{CH}_{2}-\mathrm{COOH} \). e. Which group is selected as suffix if -OH and -CHO both are present in the compound?

During a reaction, the enthalpy of formation of an intermediate is -286 \( \mathrm{~kJ} / \mathrm{mol} \). During the reaction, 2 moles of the intermediate are produced. What is the enthalpy value for this step of the reaction? A. -572 kJ B. 572 kJ C. 286 kJ D. -286 kJ

The electronic configuration of one element is \(1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 3d^ { 10} 4s^ 1\). What is same group which is recently discovered?

You need to calculate the enthalpy change \( \left(\Delta H^{0}\right) \) of the reaction \( \mathrm{A}+\frac{1}{2} \mathrm{~B} \rightarrow \mathrm{C} \). How can the enthalpies given for the reaction steps below be combined to give the overall change in enthalpy? \[ \mathrm{A}+\mathrm{B} \rightarrow \mathrm{D} \]