Advertisements
Advertisements
प्रश्न
To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.
Advertisements
उत्तर
Mass of solute (sodium chloride) = 36 g (Given)
Mass of solvent (water) = 100 g (Given)
Then, the mass of solution = Mass of solute + Mass of solution
= (36 + 100) g
= 136 g
Therefore, concentration (mass by mass percentage) of the solution
= `"Mass of solute"/"Mass of solution"xx100%`
= `36/136xx100%`
= 26.47 % (w/w)
APPEARS IN
संबंधित प्रश्न
Explain the term molality
Solve the following problem:
Write the following number in ordinary decimal form:
43.71 × 10−4
Solve the following problem:
Write the following number in ordinary decimal form:
0.011 × 10−3
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`((4xx10^-3)(9.9xx10^-7))/((789)(1.002xx10^-10)(0.3xx10^2))`
Perform each of the following calculations. Round off your answers to three digits.
(3.26104) (1.54106)
Name the process associated with the following
A drop of ink placed on the surface of water contained in a glass spreads throughout the water.
What are the favourable qualities given to gold when it is alloyed with copper or silver for the purpose of making ornaments?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a lustrous non-metal.
Which of the following solutions have the same concentration?
(i) \[\ce{20 g of NaOH in 200 mL of solution}\]
(ii) \[\ce{0.5 mol of KCl in 200 mL of solution}\]
(iii) \[\ce{40 g of NaOH in 100 mL of solution}\]
(iv) \[\ce{20 g of KOH in 200 mL of solution}\]
Molarity of liquid HCl will be if the density of the solution is 1.17 g/cc.
