Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 58

MEDIUM

NEET

IMPORTANT

Earn 100

Solutions containing $1.63 g$ of boric acid in $450 mL$ and $20 g$ of sucrose (molecular mass $= 342 g {mol}^{- 1}$ ) per litre are isotonic. The molar mass of boric acid is______.

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Important Questions on Solutions

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 60

An aqueous sucrose (molar mass

= 342

) solution is labelled as

20 % w / w

. What is the mole fraction of water in this solution?

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 62

5 g

of sodium hydroxide (molar mass

40 g {mol}^{-1}

) is dissolved in little quantity of water and the solution is diluted up to

100 mL

. What is the molarity of the resulting solution?

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 63

The molarity of urea (molar mass ${60 g mol}^{-1}$ ) solution prepared by dissolving $15 g$ urea in $500 {cm}^{3}$ of water is _______.

[MHT CET 2018]

EASY

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 64

What is the molarity of a

450 mL

solution containing

5 g

of

NaOH

?

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 65

What is the weight (in

g

) of

{Na}_{2} {CO}_{3}

( molar mass

= 106 g {mol}^{- 1}

) present in

250 mL

of its

0.2 M

solution?

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Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 66

{6.02×10}^{20}

molecules of urea are present in

100 mL

of its solution. The concentration of the solution is_______.

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IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 67

25 mL

of a solution of barium hydroxide on titration with a

0.1

molar solution of hydrochloric acid gave a titre value of

35 mL

. The molarity of barium hydroxide solution was______

M

.

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IMPORTANT

Chemistry Crash Course NEET>Chapter 8 - Solutions>Level 2>Q 68

25 {cm}^{3}

of oxalic acid completely neutralised

0.064 g

of sodium hydroxide. Molarity of the oxalic acid solution--------

M

.