For the determination of the amount of iron in FeS04.7H20; some FeS04.7H20 in water is vibrating with the dissolved and tuned solution 0.1 N KMn04. Titranttan at the end of titration It was determined that 13 mL was consumed. According to this; a) Write the reaction that took place in the experiment. b) Calculate the amount of iron in the sample. c) Theoretically, if it is known that the amount of iron in the analyte is 0.075 g, the calculate the error.