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Ideal Gas Equation

100 ml of sod...

Question

100 ml of sodium thiosulphate solution is divided into two equal parts A and B and part A requires 12.5 ml of 0.2 molar iodine solution in acidic medium and part B is diluted x times and 50 ml of dilute solution required 5ml and of 0.8 molar iodine solution in basic medium . what is the value of x

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N a_{2} S_{2} O_{3}

solution is divided into two equal parts A and B. A part requires 12.5 ml of

0.2 M l_{2}

solution (acidic medium) and part B is diluted x times and 50 ml of diluted solution requires 5 ml of

0.8 M l_{2}

solution in basic medium. What is value of x?

200

I_{2}

is divided into two unequal parts. Part I reacts with hypo solution in acidic medium and requires

8

2 M

hypo solution for complete neutralization.
Part II was added with

300

0.1 M

N a O H

solution. Residual base required

30

0.1 M

H_{2} S O_{4}

solution for complete neutralization. Calculate the value of

20

times the initial concentration of

I_{2}

?

3.0 g

sample containing

F e_{3} O_{4}, F e_{2} O_{3}

and an inert impure substance is treated with excess of

K I

solution in presence of dilute

H_{2} S O_{4}

. The entire iron is converted to

F e^{2 +}

along with the liberation of iodine. The resulting solution is diluted to

100 m L

20 m L

of the dilute solution requires

11.0 m L

0.5 M N a_{2} S_{2} O_{3}

solution to reduce the iodine present. A

50 m L

of the diluted solution after complete extraction of iodine requires

12.8 m L

0.25 M K M n O_{4}

solution in dilute

H_{2} S O_{4}

medium for oxidation of

F e^{2 +}

. Calculate the percentage of

F e_{2} O_{3}

F e_{3} O_{4}

in the original sample.

Q. A 5g sample containing

F e_{3} O_{4} (F e O + F e_{2} O_{3})

and an inert impurity is treated with excess of KI solution in the presence of dilute

H_{2} S O_{4}

. The entire iron converted to Ferrous ion along with the liberation of Iodine. The resulting solution is diluted to 100 mL. 20 mL of the diluted solution requires

10 m L o f 0.5 M N a_{2} S_{2} O_{3}

solution to reduce the iodine present. Calculate approximate percentage of

F e_{2} O_{3}

?

50

ml of an aqueous solution of

H_{2} O_{2}

were treated with an excess of

K I

solution and dilute

H_{2} S O_{4}

. The liberated iodine required

20

0.1

N N a_{2} S_{2} O_{3}

solution for complete interaction. The concentration of

H_{2} O_{2}

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