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When Na(2)CO(3) solution is titrated aga...

When `Na_(2)CO_(3)` solution is titrated against HCl solution, the indicator used is

A

Phenophthalein

B

Dilute `H_(2)SO_(4)`

C

Methyl orange

D

None

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The correct Answer is:
C

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(A ) : When Na_(2)CO_(3) is titrated against HCl in presence of phenolphthalein indicator, it is converted into NaCl. (R ) : Phenolphthalein indicator shows colour change in the P^(H) range of 3.5 to 4.6

3.65gm equimole mixture of NaOH and Na_(2)CO_(3) is titrated against 0.1M HCl using phenolphathalein as an indicator, V_(1)mL of acid was required to reach end point. In another experiment 3.65gm of same mixture is titrated against 0.2M HCl using methyl orange as an indicator, V_(2)mL of acid was required to reach end point. V_(1)+V_(2) is :

When 100 mL of 0.1 M NaCN solution is titrated with 0.1 M HCl solution the variation of pH of solution with volume of HCl added will be :

Which of the following gives equivalent mass of Na_(2)CO_(3) when titrated against HCl in the presence of methyl orange ?

DINESH PUBLICATION-IONIC EQUILIBRIUM -REVISION QUESTIONS FROM COMPETITVE EXAMS
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  2. Which of the following is not a Lewis acid ?

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  15. How many ml of 1 (M) H(2)SO(4)is required neutralise 10 ml of 1 (M) Na...

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  20. The dissociation constant of a weak monobasic acid K(a) is 1xx 10^(-5)...

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