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Chemical Properties of Ethers

24.Why their ...

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24.Why their is difference when naoh and na2co3 are titrated with phenolphthalein and methyl orange in HCL

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25 m L

of a mixture of

N a O H

N a_{2} C O_{3}

when titrated with

N / 10 H C l

using phenolphthalein indicator required

25 m L H C l

. The same volume of mixture when titrated with

N / 10 H C l

using methyl orange indicator required

30 m L

H C l

. Calculate the amount of

N a_{2} C O_{3}

N a O H

in one litre of this mixture.

10 g

N a_{2} C O_{3}

N a O H

was titrated against

H C l

by using phenolphthalein followed by adding methyl orange after first equivalence point,

7.7818 g

H C l

was consumed in total. Find the mass of

N a_{2} C O_{3}

in the mixture.

0.2 g m

of solution of mixture of

N a O H

N a_{2} C O_{3}

and inert impurities was first titrated with phenolphthalein and

N / 10

H C l

17.5 m l

H C l

was required at the endpoint. After this methyl orange was added and

2.5 m l

H C l

was again required for next endpoint. Find out percentage of

N a O H

N a_{2} C O_{3}

in the mixture.

Q. 200 mL of a solution mixture

N a O H

N a_{2} C O_{3}

was first titrated with phenolphthalein and N/10 HCl 17.5 mL of HCl was required for the end point. After this methyl orange was added and 2.5 mL of same HCl was again required for next end point. Find out the mass of NaOH and

N a_{2} C O_{3}

50 mL

solution having

N a O H

N a_{2} C O_{3}

0.5 M 10 mL H C l

for complete titration with phenolphthalein indicator and another

50 mL

solution require

0.5 M, 12 mL H C l

solution in methyl orange indicator then what is the ratio of number of mole of

N a O H

N a_{2} C O_{3}

?

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