Advertisements
Advertisements
प्रश्न
Calculate the molarity of the following solution:
30 mL of 0.5 M H2SO4 diluted to 500 mL.
Advertisements
उत्तर
Number of moles present in 500 mL of 0.5 M H2SO4 = 0.5 mol
∴ V1 = 30 mL
M1 = 0.5 M
V2 = 500 mL
M2 = ?
Using the formula:
M1V1 = M2V2
⇒ 0.5 M × 30 mL = M2 × 500 mL
⇒ M2 = `(0.5 xx 30)/500`
⇒ `15/500`
⇒ 0.03 M
∴ The molarity of the solution is 0.03 M.
APPEARS IN
संबंधित प्रश्न
When KOH solution is added to potassium dichromate solution the colour of solution
changes to yellow, because _______
(A) chromate ion changes to dichromate ion
(B) dichromate ion changes to chromate ion
(C) oxidation number of chromium changes from + 6 to + 4
(D) oxidation number of chromium changes from + 4 to +6
Define molality.
1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of the resultant solution:
25 ml of a solution of barium hydroxide on titration with a 0.1 molar solution of hydrochloric acid gave a titre value of 35 ml. The molarity of barium hydroxide solution was ______.
If N/10 50 ml H2SO4, N/3 30 ml HNO3, N/2 10 ml HCl is mixed and solution is made to 1 L. Then normality of the resultant solution is:
The number of moles of NaCl in 3 litres of 3 M solution is ____________.
What is the mole fraction of solute in 1.00 m aqueous solutions?
Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Molarity of a solution changes with temperature.
Reason (R): Molarity is a colligative property.
Select the most appropriate answer from the options given below:
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
V/V (volume percentage)
Match List-I with List-II:
| List-I | List-II |
| A. ppm | I. molL-¹ |
| B. Molarity | II. No units |
| C. Molality | III. Independent of temperature |
| D. Mole fraction | IV. Very dilute solutions |
Choose the correct answer from the options given below:
The concentration of water molecules in pure water at 298 K is?
Carbon percentage (by weight) in crude petroleum may be about
The de Broglie wavelength of a car of mass 1000 kg and velocity 36 km/hr is :
A solution has been prepared by dissolving 5 g of urea in 95 g of water. What is the mass percentage of urea in the solution?
What is the normality of 0.3 m H3Pcl solution?
3.36 M sulphuric acid solution is 29% H2SO4 calculate the density of the solution.
Calculated the mole fraction of benzene in a solution containing 30% by mass of its is carbon tetrachloride
4.5 g of compound A (MW = 90) was used to make 250 mL of its aqueous solution. The molarity of the solution in M is x × 10−1. The value of x is ______. (Rounded-off to the nearest integer)
A given solution of H2O2 is 30 volumes. Its concentration in terms of molarity is ______.
The mole fraction of a solute in a 100 molal aqueous solution is ______ × 10-2. (Round off to the Nearest Integer).
[Given :Atomic masses : H : 1.0 u, O : 16.0 u]
