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Redox Reactions

Which of the ...

Question

Which of the following compounds we use in our laboratory as a standard solution (titrant) ?

A

K M n O_{4}

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B

K_{2} C r_{2} O_{7}

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C

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

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D

All of these

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Solution

The correct option is B All of these
A reagent, called the titrant or titrator is prepared as a standard solution. A known concentration and volume of titrant reacts with a solution of analyte or titrand to determine concentration.
${K M n O}_{4}$ , $K_{2} {C r}_{2} O_{7}$ , ${N a}_{2} S_{2} O_{3}$ etc. are compounds we use in our laboratory as a standard solution.

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Similar questions

Q. In standardization of

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

K_{2} C r_{2} O_{7}

by iodometry the equiavlent weight of

K_{2} C r_{2} O_{7}

Q. In the standardization of

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

K_{2} C r_{2} O_{7}

by iodometry, the equivalent weight of

K_{2} C r_{2} O_{7}

Q. In the standardization of

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

K_{2} C r_{2} O_{7}

by iodometry, the equivalent mass of

K_{2} C r_{2} O_{7}

0.5

K_{2} C r_{2} O_{7}

K M n O_{4}

is treated with excess of

K I

in acidic medium.

I_{2}

liberated requires

100

0.15 N

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

solution for titration.

%

K_{2} C r_{2} O_{7}

%

K M n O_{4}

Q. In the standardization of

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

K_{2} C r_{2} O_{7}

by iodometry , the equivalent weight of

K_{2} C r_{2} O_{7}

is :
(Given : Molecular weight of

K_{2} C r_{2} O_{7} i s 294 g

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