Question

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

Solution

Correct option is

100mL

 

H3PO2 + NaOH → NaH2PO2

Eq. mass of H3PO2 = molar mass = 66

Equivalents of H3PO2

SIMILAR QUESTIONS

Q1

In a reaction, 3mol of electrons are gained by 1 mol of HNO3. Assuming no change in oxidation state of hydrogen the possible product obtained due to reduction will be

Q2

Ratio of mols of Fe(II) oxidised by equal volumes of equilmolar KMnO4and K2Cr2O7 solutions in acidic medium will be

Q3

The oxidation numbers of most electronegative element in the products of hydrolysis of peroxydisulphuric acid are

Q4

 

For the redox reaction  the correct coefficients of the reactants for the balanced equation are

                                            

Q5

The equivalent  mass of Na2CrO4 used as oxidant in acidic medium is (Cr = 52)

Q6

The equivalent masses of Na2CO3 when it is titrated with HCl using phenolphthalein and methyl orange indicators in separate experiments are

Q7

Which of the following can be reduced by SnCl2 solution

Q8

 

Hydrazine reacts with KIO3 in presence of HCl as

The equivalent masses of N2H4 and KIO3 respectively are

Q9

 

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

Q10

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?