1. Tardigrade
  2. Question
  3. Chemistry
  4. Chemical reactions involve interaction of atoms and molecules. A large number of atoms / molecules (approximately 6.023 × 1023 ) are present in a few grams of any chemical compound varying with their atomic/molecular masses. To handle such large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical chemistry, biochemistry, electrochemistry, and radiochemistry. The following example illustrates a typical case, involving chemical/electrochemical reaction, which requires a clear understanding of the mole concept. If the cathode is a Hg electrode, the maximum mass of amalgam formed from this solution is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Chemical reactions involve interaction of atoms and molecules. A large number of atoms $/$ molecules (approximately $6.023 \times 10^{23}$ ) are present in a few grams of any chemical compound varying with their atomic/molecular masses. To handle such large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical chemistry, biochemistry, electrochemistry, and radiochemistry. The following example illustrates a typical case, involving chemical/electrochemical reaction, which requires a clear understanding of the mole concept.
If the cathode is a $Hg$ electrode, the maximum mass of amalgam formed from this solution is

JEE AdvancedJEE Advanced 2007

Solution:

$Na - Hg$ (amalgam) formed $=2$ moles at cathode
$=(200+23) \times 2=446 \,g$