Question

Q14 In spectroscopy, a change in equilibrium gives rise to a chemical deviation. Explain your answer?

( not handwriting please )

Answer 1

any chemical reaction is associated with equilibrium constant K which reflects ratio of products concentration to reactant concentration. this concentration is measured directly or Indirectly. Spectrophotometery measures value of K by by direct measurement of known concentration of one colored component and indirect measurement of other components. Visible spectroscopy related absorbance of color components using Beer Lambert law. using Beer's curve (absorbance vs concentration) used to find other reactant and product concentration by adjusting initial concentration of colored component. Which determines value of K. When equllibrium changes value of concentration of colored species changes and mody Beer's curve to give different values of other components. So value of K will change that will show chemical deviation.