Advertisements
Advertisements
प्रश्न
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
Advertisements
उत्तर
Volume of acetone = 25 ml
Volume of solution = 150 ml
`"concentration"= "volume of solute"/"volume of solute + volume of solvent"xx100`
`=25/150xx100`
=16.667%
APPEARS IN
संबंधित प्रश्न
An inflated balloon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the balloon is airtight. And after a week all the air has escaped from the balloon. Explain how the air particles got out of the balloon.
Name a non-metal which is a good conductor of electricity.
Which type of elements, metals or non-metals, show the property of brittleness ?
Which one of the following is not a metalloid ?
What is the difference between solutions and colloids ?
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
Define solubility of a substance. How does it vary with temperature ?
Which one of the following is not a chemical change ?
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process you would use to separate a mixture of water and alcohol.
Name the process by which common salt is purified.
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
How is scrap iron separated from a heap of waste materials in factories?
How will you separate a mixture of common salt, sulphur powder and sand ?
How will you separate a mixture of iron filings, chalk powder and common salt ?
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
Liquids cannot be compressed and they have fixed volume.
Define the term matter.
