मराठी

How Would You Prepare a Saturated Solution of Sodium Chloride in Water at 25°C ? What Will Happen If this Solution is Cooled to 10°C ? - Science

Advertisements
Advertisements

प्रश्न

How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this  solution is cooled to 10°C ?

टीपा लिहा

उत्तर

We will dissolve sodium chloride or NaCl in water in room temperature, till the water can no longer dissolve any more salt. By doing so, we will obtain a saturated solution of sodium chloride.

If the temperature is lowered from 25°C to 10°C, some of its dissolved solutes will get separated in the form of solute crystals due to the decrease in solubility of the solute.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Is Matter Around Us Pure - Very Short Answers [पृष्ठ ८१]

APPEARS IN

लखमीर सिंह Chemistry [English] Class 9
पाठ 2 Is Matter Around Us Pure
Very Short Answers | Q 50.2 | पृष्ठ ८१

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Differentiate between an atom and a molecule.


Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?


What are the two types of pure substances? Give one example of each type.


Which of the following statements are true for pure substances ?

  1. pure substances contain only one kind of particles
  2. pure substances may be compounds or mixtures
  3. pure substances have the same composition throughout
  4. pure substances can be exemplified by all elements other than nickel

How will you test whether a given solution is a colloidal solution ?


Define Foam Give one example.


21.5 g of sodium chloride dissolves in 60 g of water at 25°C. Calculate the solubility of sodium chloride in water at that temperature.


What is meant by a solution ? Give two examples of solutions.


Which of the following is not an emulsion ?


Name the property of one of the constituents which can be used to separate a mixture of salt and iodine


How would you separate iodine from a mixture of iodine and common salt ?


Describe a method to separate a mixture of camphor and sand.


Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.


How will you separate a mixture of iron filings, chalk powder and common salt ?


Which of the following cannot be separated from air by the process of fractional distillation ?


The particles in the matter are extremely small and can be seen even with a powerful microscope.


The non S I and S I units of some physical  quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity: 

(A) (B)
(a) degree celsius (i) kilogram
(b) centimetre (ii) pascal
(c) gram per centimetre cube (iii) metre
(d)  bar (iv) kelvin
(e) milligram (v)  kilogram per metre cube

In Aerosol the dispersed phase is liquid and the dispersion medium is gas.


Liquids have ______.


Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×