Question

sources of errors in an experiment to determine absorption spectra and formula of complex of fe3+ containing water and thiocynate using beers law and method of continuous variation

Answer 1

Any experiment in chemistry can have many kind of errors like random error, systematic error.

Random errors are undpredictable source of errors and it cannot be nullified.

For this experiment the sources of random errors can be erroneous values rate constant. It is generally approximated to three or fours significant figures which is a source of random error.

Another kind of errors are systematic errors. This kind of error can be eliminated if the sources of error can be known this kind of errors are proportional to the true values. Such that sources of systematics errors are

1. Measuring the quantity of reagents.

2. Drawing the calibration for determination of molar absorbtivity

3 Errors in Calibrated volume of micropipette and other measuring instruments.