Question

In a particular gravimetric analysis, the precipitate of caso4 was weighed before it was completely dried. the likely impact of this error on the calculated moles of caso4 will be:

Answer 1

If the precipitate of CaSO4 was weighed before all of the water has evaporated, therefore this will lead to a miscalculation on the number of moles of CaSO4. During the calculation, the mass of the water will be included hence there will be higher number of moles than what is correct.