Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 2>Q 56

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Earn 100

$5$ moles of ${SO}_{2}$ and $5$ moles of $O_{2}$ are allowed to react to form ${SO}_{3}$ in a closed vessel. At the equilibrium stage, $60 %$ ${SO}_{2}$ is used up. The total number of moles of ${SO}_{2}$ , $O_{2}$ and ${SO}_{3}$ in the vessel now is:

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Important Questions on Some Basic Concepts of Chemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 1

The molarity of

H_{2} {SO}_{4}

solution, which has a density

1.84 g / cc

at

35 ° C

and contains

98 %

, by weight is

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 2

10^{21}

molecules are removed from

200 mg

of

{CO}_{2}

. The moles of

{CO}_{2}

left are:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 3

The weight of

NaCl

decomposed by

4.9 g

of

H_{2} {SO}_{4}

is, if

6 g

of sodium hydrogen sulfate and

1.825 g

of

HCl

were produced in the reaction.

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 4

The mass of $70 % H_{2} {SO}_{4}$ required for neutralization of one mole of $NaOH$ is:

(Given the molar mass of $NaOH = 40 g / mol$ and the molar mass of $H_{2} {SO}_{4} = 98 g / mol$ )

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 5

A compound possess

8 %

sulphur by mass. The least molecular mass is

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 8

An aqueous solution of

6.3 g

of oxalic acid dihydrate is made up to

250 ml

. The volume of

0.1 N

NaOH

required to completely neutralize

10 ml

of this solution is

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 9

Which has the maximum number of molecules among the following?

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 4>Q 10

Carbon and oxygen form two compounds. The carbon content in one of them is

42.9 %

while in the other it is

27.3 % .

The given data is in support with: