Solutions

Which of the following statement is true for an ideal solution?

The density of a solution prepared by dissolving 1 gram molecule of sucrose in 1000 gram of water is 1.15 gm/ml. The molarity of the solution is ____.

In an estimation of sulphur by carius method, 0.25gm of an organic compound gave 0.35gm of BaSO₄. The mass percentage of sulphur in the compound is (Molecular weight of BaSO₄ = 233 g/mol )

What volume in ml of 5 M H₂SO₄ should be added to 150ml of 1 M H₂SO₄ to obtain a solution of molarity = 2.5 M, if upon mixing volume of solution decreases by 10%?

Molality of sulphuric acid solution in which the mole fraction of water is 0.74 is:

4.5g of compound A (MW = 90) was used to make 250 mL of its aqueous solution. The molarity of the solution in M is * 10^-1. The value of x is_________ (Rounded off to the nearest integer)

10.30 mg of O₂ is dissolved in 1L of sea water of density 1.03 g/mL. The concentration of O₂ in ppm is _______.

In a solvent 50% of an acid HA dimerizes and the rest dissociates. The van't Hoff factor of the acid is _____ *10⁻². (Round off to the Nearest Integer).

BF₃ is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :

In one molal solution that contains 0.5 mole of a solute, there is: