Advertisements
Advertisements
प्रश्न
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
Advertisements
उत्तर
Volume of alcohol = 5.6 ml
Volume of water = 75 ml
So, volume of solution = 75ml + 5.6 ml = 80.6 ml
`"concentration"= "volume of solute"/"volume of solute + volume of solvent"xx100`
`= 5.6/80.6xx100`
= 6.9%
APPEARS IN
संबंधित प्रश्न
A kind of matter which can sublime is
What are the characteristics of matter?
State any two properties for believing that aluminium is a metal.
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
Name a non-metal :
- which is lustrous
- which is required for combustion
- whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope.
- other than carbon which shows allotropy
- which is known to form the largest number of compounds
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.
(a) Which liquid could be an element ? Name this element.
(b) Which liquid could be a mixture ? Name this mixture.
(c) Which liquid could be a compound ? Name this compound.
(d) What could the solid D be ?
(e) What do you think is liquid E ?
What is the most common way of expressing the concentration of a solution ?
How much water should be added to 15 grams of salt to obtain 15 per cent salt solution ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
How will you test whether a given solution is a colloidal solution ?
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
Which one of the following is not a chemical change ?
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Which technique can be used to detect and identify traces of poison present in the stomach wash of a person ?
Describe the method of separating a mixture containing common salt, sand and ammonium chloride.
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
A teabag placed in a cup of hot water will diffuse into the water.
Define the term matter.
Define the term matter.
