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Showing posts with label CONCENTRATION UNITS (STOICHIOMETRY). Show all posts
Showing posts with label CONCENTRATION UNITS (STOICHIOMETRY). Show all posts
Wednesday, October 20, 2021

Calculate the molality and Molarity of a solution of H2SO4 that is 49 % (w/W) and has a density of 1.1g/cc

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ILLUSTRATIVE EXAMPLES: (1): Calculate the mole fraction of solute in the 12 molal aqueous solution of CaCO3. (2): The mole fract...

A solution of NaOH which is 60 %(w/V) is found to have a density of 1.2g/cc. Find its %(w/W) and Molarity.

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ILLUSTRATIVE EXAMPLES: (1): Calculate the mole fraction of solute in the 12 molal aqueous solution of CaCO3. (2): The mole fract...
Tuesday, October 19, 2021

What volume of 75% alcohol by weight (d=0.80g/cm3) must be used to prepare 150cm3 of 30% alcohol by weight (d=0.90g/cm3)?

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As par question mass of alcohol is same in both solutions. Consider V ml of alcohol required. Then  75​/100×0.8×V=30/100 ×0.9×150 V=67.5mL I...
Saturday, June 6, 2020

What is relation between mole fraction and molality of solute ?

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ILLUSTRATIVE EXAMPLES: (1): Calculate the mole fraction of solute in the 12 molal aqueous solution of CaCO3. (2): The mole fract...

Calculate the amount of water that should be added to 16 gm methanol to make mole fraction of methanol as 0.25.?

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Mole fraction of I2 (iodine) in benzene (C6H6) is 0.2 . Calculate the molality of iodine (I2) in benzene.

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The relation  between molarity and mole fraction is given as below:

If the mole fraction of a solute is changed from 1/4 to 1/2 in the 800 gm of solvent . then the ratio of molality will be .

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The mole fraction of glucose in aqueous solution is 0.2 , The molality of solution will be.

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Calculate the mole fraction of solute in the 12 molal aqueous solution of CaCO3.

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