Question

Can you please help me with this question thank you

2. Determine the procedure for obtaining 50 mL of 0.01 M FeCl3 from a stock of 0.05 M.

Answer 1

2. Given the concentnalien ef stock solution Let this be M 0.05M So, H M, - 0.05M Solution Molarily ot new (42) 0.01 M Volume aequined 5omL Houo much volume ot stock solutiont)is nequined ? Use the equation- H,Y, M,V M,V Since molasil x Volume gives number tmoles Number of moles of the

Substamce hemains constan dilution Substitute the values in enuation Same On 0.01 M X 5o mL 0.0SM V O.OIM X So mL V 0.05M 10ML Hence, 1omL f stock solution nequined is Consider 1omL O.05M Stock solution . Add 40mL ot water (distilled 2) Total volume t solution becomes 5omL 4) Then final malar fecl O.O1M becomes