Explain what is the weight percent of fe2o3 in the sample

Assignment Help Chemistry

Reference no: EM13702777

Problem- i). An iron ore is analyzed for iron content by dissolving in acid, converting the iron to Fe2+, and then titrating with standard 0.0150 M K2Cr2O7 solution. If 35.6 mL is required to titrate the iron in a 1.68 g sample, how much Fe2+ is in the sample? What is the weight percent of Fe2O3 in the sample (assuming all the iron is in this form)? The titration reaction is: 6 Fe2+ + Cr2O72- + 14 H+ --> 6 Fe3+ + 2 Cr3+ + 7 H2O.

ii).Calculate the grams of each substance required to prepare each the following solutions:

1. 500.0 mL of 0.100 M Na2SO4

2. 250.0 mL of 0.250 M Fe(NH4)2(SO4)2?6H2O

3. 100.0 mL of 0.667 M Ca(C9H6ON)2

I need proficient help to working out this problem

Reference no: EM13702777

Questions Cloud

What power is radiated by this source : A spherical source radiates sound uniformly in all directions. At a distance of 14 m, the sound intensity level is 10-4 W/m2. What power is radiated by this source

What is the magnitude of the charge : At a certain distance from a charged particle, the magnitude of the electric field is 526 V/m and the electric potential is -3.40 kV. What is the magnitude of the charge

How many protons were removed for each l-lysine molecule : Problem- A 500 mg die A 500mg dietary supplement of L-lysine (an amino acid, 146.2 g/mol) required 68.4 mL of 0.100 M NaOH to reach the end point. How many protons were removed for each L-lysine molecule in this titration

Find by how much does a person change the entropy : A person having a sking surface area of 1.85 m2 and the temperature of 30.0 C is resting in an insulated room where the ambient air temperature is 20.0 C. By how much does a person change the entropy of the air in this room each second

Explain what is the weight percent of fe2o3 in the sample : Problem- i). An iron ore is analyzed for iron content by dissolving in acid, converting the iron to Fe2+, and then titrating with standard 0.0150 M K2Cr2O7 solution. If 35.6 mL is required to titrate the iron in a 1.68 g sample, how much Fe2+ is i..

What is the potential energy of the pair of charges : Two point charges Q1 = +4.90 nC and Q2 = 2.70 nC are separated by 25.0 cm. What is the potential energy of the pair of charges

What is the final dilution factor : Problem- A 24 hour urine creatinine is diluted 1:10 with saline. The value is too high for accuracy, so the solution is diluted 1:5. What is the final dilution factor

How much glucose is consumed to make that carbon dioxide : Problem- The average the adult exhales about 1.0 kg of carbon dioxide each day. How much glucose (C6H12O6, 180 g/mol) is consumed to make that much carbon dioxide

Calculate the speed of a proton that is accelerated : Calculate the speed of a proton that is accelerated from rest through an electric potential difference of 138 V

User Account

All Pages