NEETChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
What fraction of Fe exists as Fe(III) in Fe0.96O ?
(Consider Fe0.96O to be made up of Fe(II) and Fe(III) only)
- A
- B
- C0.08
- D
View written solutionFree
Correct answer: B
Fe0.96O
Let Fe(II) present in Fe0.96O = x
Fe(III) present = (0.96 $-$ x)
Total charge on Fe = 2x + (0.96 $-$ x)3
Total charge on O = $-$2
2x + (0.96 $-$ x)3 = 2
2x + 2.88 $-$ 3x = 2
$-$x = $-$0.88
x = 0.88
Fe2+ = 0.88, Fe3+ = 0.08
Fraction of Fe3+ = $${{0.08} \over {0.96}} = {1 \over {12}}$$
More from Some Basic Concepts of Chemistry
- The density of the solution is 2.15 g mL1, then mass of 2.5 mL solution in correct significant figures is :2022 · MCQ
- In one molal solution that contains 0.5 mole of a solute, there is2022 · MCQ
- What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction? CaCO3(s) + 2HCl(aq) CaCl2(aq) + Co2(g) + 2H2O(l) [Calculate upto second place of decimal point]2022 · MCQ
- An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1]2021 · MCQ
- Which one of the following has maximum number of atoms?2020 · MCQ
- The number of protons, neutrons and electrons in 17571Lu, respectively, are :2020 · MCQ
- The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is :2019 · MCQ
- A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H2SO4 . The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be2018 · MCQ