Question

5 mol of mixture of Mohr’s salt and Fe2(SO4)3 requires 500mL of MK2Cr2O7 for complete oxidation in acidic medium. The mole % of the Mohr’s salt in the mixture is

Solution

Correct option is

60

 

                                        

Eq. of Fe2+ (= moles of Mohr’s salt) = Eq. of K2Cr2 O7

(n=factor of K2Cr2 O7 = 6)

SIMILAR QUESTIONS

Q1

Which of the following can be reduced by SnCl2 solution

Q2

 

Hydrazine reacts with KIO3 in presence of HCl as

The equivalent masses of N2H4 and KIO3 respectively are

Q3

 

In iodometric estimation of Cu2+ ions, the following reactions take place

If 100mL of CuSO4 solution added to an excess of KI requires 50mL of 0.2 M Na2S2O3, the molarity of CuSO4 solution is

Q4

0.66 g H3PO2 will require x mL of 0.1 NaOH for complete neutralization .x is

Q5

20mL solution containing 0.1 M each of HCl and HNO3 required mL of 0.1 M NaOH for complete neutralization. In another experiment to 20mL of original solution, excess of AgNO3 is added and the precipitate of AgCl is filtered off. The entire filtrate along with washings required y mL of the same NaOH solution for neturalization. Then, which of the following relation is correct?

Q6

10g sample of H2O2 just decolorised 100mL of 0.1 M KMnO4 in acidic medium. % by mass of H2O in the sample is

Q7

 

KMnO4 reacts with oxalic acid as :

Hence, 50mL of 0.04 M KMnO4 is acidic medium is chemically equivalent to

Q8

Solution A and B of H2SO4 have respective molarities to be 5.0 and 1.0 In order to prepare 10L of 8 N H2SO4, what volumes of A and B solutions need be mixed?

Q9

You are given 1 L of 2 N H2SO4 and 1 L 5 N H2SO4. What will be the maximum volume of 1.5 M H2SOthat you can prepare from these two solutions?

Q10

For the reaction : 2H3PO2 → H3PO4 +PH3 , the equilvant mass of H3PO2 is