Advertisements
Advertisements
Question
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)
Advertisements
Solution
Volume percentage (v/v): Volume % of a component = `"V of the component"/"V of the solution" xx 100`
where, V represent volume
APPEARS IN
RELATED QUESTIONS
Calculate (a) molality (b) molarity and (c) mole fraction of KI if the density of 20% (mass/mass) aqueous KI is 1.202 g mL−1.
A sample of drinking water was found to be severely contaminated with chloroform (CHCl3) supposed to be a carcinogen. The level of contamination was 15 ppm (by mass):
- express this in percent by mass.
- determine the molality of chloroform in the water sample.
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
What is molal depression constant? Does it depend on nature of the solute?
Molarity of liquid HCl will be if the density of the solution is 1.17 gm/cc.
The molarity of the solution containing 7.1 g of Na2SO4 in 100 ml of aqueous solution is ____________.
4.0 g of NaOH is dissolved in 100 ml solution. The normality of the solution is ____________.
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 ______.
What is the normality of a 1 M solution of H3PO4?
200 ml of water is added to 500 ml of 0.2 M solution. What is the molarity of this diluted solution?
How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0M HNO3? The concentrated acid is 70% HNO3:
Which of the following units is useful in relating concentration of solution with its vapour pressure?
4 L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molality of the resultant solution is ______.
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?
M (Molarity)
The concentration of water molecules in pure water at 298 K is?
The number of electrons involved in the reduction of one nitrate ion to hydrazine is
What is the normality of 0.3 m H3Pcl solution?
The molarity of the solution prepared by dissolving 6.3 g of oxalic acid (H2C2O4 · 2 H2O) in 250 mL of water in mol L-1 is x × 10-2. The value of x is ______. (Nearest integer)
[Atomic mass: H : 1.0, C : 12.0, O : 16.0]
Calculate the molarity of the following solution:
30 mL of 0.5 M H2SO4 diluted to 500 mL.
