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10 mL of 0.2 N HCl and 30 mL of 0.1 N HCl together exactly neutralises 40 mL of solution of NaOH, which is also exactly neutralised by a solution in water of 0.61 g of an organic acid.What is…
The vapour density of a chloride of an element is 39.5. The Ew of the elements is 3.82. The atomic weight of the element is
2H3PO4 + 3 Ca(OH)2Ca3(PO4)2 + 6 H2O Equivalent weight of H3PO4 in this reaction is
The normality of 0.3 M phosphorous acid (H3PO3) is
50 ml of 10 N H2SO4, 25 ml of 12 N HCl and 40 ml of 5N HNO3 were mixed together and the volume of the mixture was made 1000 ml by adding water. The normality of the resulting solution will be
0.115 g of pure sodium metal was dissolved in 400 ml distilled water. The normality of the above solution
10 mL of N/2 HCl, 20 mL of N/2 H2SO4 and 30 mL N/3 HNO3are mixed together and solution made to one litre. The normality of the resulting solution is
To neutralize completely 20 mL of 0.1 M aqueous solution of phosphorus (H3PO3) acid, the volume of 0.1 M aqueous KOH solution required is
6.023 × 1020 molecules of urea are present in 100 mL of its solution. The concentration of urea solution is
25 mL of a solution of Ba(OH)2 on titration with a 0.1 M solution of HCl gave a titre value of 35 mL. The molarity of barium hydroxide solution was
Assertion :When a solution is diluted from volume V1 to V2 by adding solvents, its molarity before dilution M1 and after dilution M2 are related as : M1V1 = M2V2 Reason:During dilution, moles of the solute remains co…
A standard solution of 0.165 M HCl is being used to determine the concentration of an unknown NaOH solution. If 25.5 mL of an acid solution are required to neutralize 15.0 mL of the base, what is the mo…
The final molarity of a solution made by mixing 50 mL of 0.5 M HCl, 150mL of 0.25 M HCl and water to make the volume 250 mL is
Molarity equation of a mixture of solutions of same substance is given by (a) M V M V M V ... M M M x x x x (b) M V M V M V ... M V V V (c) M M M ... M V V V V V V (d) M M M ... M V V V V V V …
The density of a solution prepared by dissolving 120g of urea (mol. mass = 60 u) in 1000 g of water is 1.15g/mL. The molarity of this solution is
The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 ml of 2 M HCl will be
Mole fraction of ethanol in ethanol - water mixture is 0.25. Hence, percentage concentration of ethanol (C2H6O) by weight of mixture is
What is the weight % sulphuric acid in an aqueous solution which is 0.502 M in sulphuric acid? The specify gravity of the solution is 1.07
What is the molarity of S O ion in aqueous solution that contain 34.2 ppm of Al2(SO4)3 ? (Assume complete dissociation and density of solution 1 g/mL)
An antifreeze mixture contains 40% ethylene glycol (C2H6O2) by weight in the aqueous solution. If the density of this solution is 1.05 g/mL, what is the molar concentration?
The density (in g mL–1) of a 3.60 M sulphuric acid solution that is 29% H2SO4 (molar mass = 98 g mol-1) by mass will be MOLE & EQUIVALENT CONCEPT
What volume of 0.4 M FeCl3 . 6H2O will contain 600 mg of Fe3+ ?
With increase of temperature, which of these changes?
In which mode of expression, the concentration of a solution remains independent of temperature ?
The mole fraction of a given sample of I2 in C H is 0.2. The molality of I2 in C6H6 is