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NEET Sample Paper NEET Sample Test Paper-1

  • question_answer
    Calculate the standard free energy change for the reaction. \[2Ag+2{{H}^{+}}\xrightarrow{{}}{{H}_{2}}+2A{{g}^{+}}\] \[{{E}^{o}}\] for \[A{{g}^{+}}+c\xrightarrow{{}}Ag\]is \[0.80V\]

    A)  \[+154.4\text{ }KJ\]              

    B)  \[+308.8\text{ }KJ\]

    C)  \[-154.4\text{ }KJ\]       

    D)  \[-308.8\text{ }KJ\]

    Correct Answer: A

    Solution :

    \[\because \]     \[E_{cell}^{o}=0.80\,V\] \[\Delta G=-nF\,{{E}^{o}}_{cell}\]             \[=-2\times 86500\times (-0.80)J=+154.4\,KJ\]


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