Podcast
Questions and Answers
What is the main goal of the student in the experiment?
What is the main goal of the student in the experiment?
- To measure the wavelength of the spectrophotometer
- To calculate the absorbance of the CuSO4 solution
- To determine the solubility of the impurity
- To determine the concentration of CuSO4 in the solution (correct)
What is the purpose of the calibration graph in the experiment?
What is the purpose of the calibration graph in the experiment?
- To calculate the mass of the sample
- To determine the wavelength of the spectrophotometer
- To measure the concentration of the impurity
- To establish a relationship between absorbance and concentration of CuSO4 (correct)
What is the effect of the accidental change in wavelength setting from 280nm to 300nm on the experiment?
What is the effect of the accidental change in wavelength setting from 280nm to 300nm on the experiment?
- It would not affect the experiment
- It would increase the absorbance of the CuSO4 solution
- It would change the concentration of the CuSO4 solution
- It would decrease the accuracy of the calibration graph (correct)
What is the unit of the concentration of the CuSO4 solution in the experiment?
What is the unit of the concentration of the CuSO4 solution in the experiment?
What is the value of the absorbance of the CuSO4 solution measured by the student?
What is the value of the absorbance of the CuSO4 solution measured by the student?
What is the concentration of the CuSO4 solution in the experiment?
What is the concentration of the CuSO4 solution in the experiment?
What is the number of moles of CuSO4 in the impure sample of CuSO4(s)?
What is the number of moles of CuSO4 in the impure sample of CuSO4(s)?
What is the additional quantity that must be measured to calculate the mass percentage of CuSO4 in the impure sample of CuSO4(s)?
What is the additional quantity that must be measured to calculate the mass percentage of CuSO4 in the impure sample of CuSO4(s)?
What is the relationship between the absorbance and concentration of CuSO4 in the experiment?
What is the relationship between the absorbance and concentration of CuSO4 in the experiment?
What is the principle behind the spectrophotometer used in the experiment?
What is the principle behind the spectrophotometer used in the experiment?
