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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Hard

1 of 1

Application +4 | -1

In the mixture of

\left(\mathrm{NaHCO}_3+\mathrm{Na}_2 \mathrm{CO}_3\right)

, volume of

\mathrm{HCl}

required is

x \mathrm{~mL}

with phenolphthalein indicator and

y \mathrm{~mL}

, with methyl orange indicator in the same titration. Hence, volume of

\mathrm{HCl}

for complete reaction of

\mathrm{Na}_2 \mathrm{CO}_3

is:

View answer and explanation

Correct option: A

2 x

Option A (

2x

) is correct because the volume of HCl required for complete reaction of Na2CO3 is twice the volume required to convert it to NaHCO3 using phenolphthalein.

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If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of initial and final volumes under the same temperature and pressure would be: How many g are present in one mole of Ag? 8 g of NaOH is dissolved in 18 g of

{H_2}O.

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mol\,\,k{g^{ - 1}})

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2.24 {~L}

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0.5 \mathrm{~g}

\mathrm{Cu}(\mathrm{II})

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