Question

he electrical leads from the Constant Current System are damaged slightly, leading to a small "short-circuit" that results in 10% of the measured current passing through the short circuit without going through the metal strips. The current displayed (and hence the value of the integral) are based on the total current, but only 90% of this actually leads to dissolution of metal. What effect would this have on your experimental value of Avogadro's Number? (Note that you complete your calculations assuming that 100% of the current is applied to dissolving the metal strip.)

Answer 1

Answer:

The Avogadro's Number will reduce in value

Explanation:

From the question we are told that

The current pass through the short circuit is $0.1 *I$

Here I is the total current

Generally Avogadro's Number is mathematically represented as

$N_A = \frac{Q}{ 2 * n * e}$

Here Q is the charge which is mathematically represented as

$Q = It$

        n  is number of moles

        e is the charge on an electron

 So

       $N_A =  \frac{I * t }{ 2 *  n * e}$

Now when the current decreases from 100% to  90% due to the short circuit . this will also reduce  the no of moles of metal  dissolved hence from the equation we see that the Avogadro's Number will reduce