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Ideal Gas Equation

8. Calculate ...

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8. Calculate the weight of NaOH & NaHCO3 whose 50ml each is completely neutralised by titrating it against 2 molar 10 ml HCL solution using HPh indicator and then titrating it against 1 molar 50 ml HCL solution using MeOH indicator. Also calculate their weight in 1 litre solution.

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20 m L

1 M H C l

is titrated against the

1 M N a O H

solution. Calculate the

p H

of the solution when

30 m L N a O H

20 mL

0.1 M

solution of compound

N a_{2} C O_{3} \cdot N a H C O_{3} \cdot 2 H_{2} O

is titrated against

0.05 M H C l

x mL

H C l

is used when phenolphthalein is used as an indicator and

y mL

H C l

is used when methyl orange is the indicator in two separate titrations. Hence

(y - x)

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}

?

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.

40

0.05 M

solution of sesqui-carbonate

(N a_{2} C O_{3} . N a H C O_{3} .2 H_{2} O)

is titrated against

0.05 M

H C l

x

H C l

is used when phenolphthalein is the indicator and

y

H C l

is used when methyl orange is the indicator in two separate titrations. Hence,

(y - x)

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