Some Basic Conc...

For the reaction 2x + 3y + 4z → 5w

Initially if 1 mole of x, 3 mole of y and 4 mole of z is taken. If 1.25 mole of w is obtained then % yield of this reaction is

Molarity of NaOH in a solution prepared by dissolving 4 g of NaOH in enough water to form 250 ml of solution is:​

125 ml of 8% w/w NaOH solution (sp. gravity 1) is added to 125 ml of 10% w/v HCl solution. The nature of resultant solution would be ____

Ratio  of masses of H₂SO₄  and Al₂ (SO₄)₃ is grams each containing 32 grams of S is _____

18 g of glucose (C₆H₁₂O₆) is present in 1000 g of an aqueous solution of glucose. The molality of this solution is:​

For the reaction 2A + 3B + 5C → 3D

Initially if 2 mole of A, 4 mole of B and 6 mole of C is taken, With 25% yield, moles of D which can be produced are _____________.

Two elements X (atomic mass = 75) and Y (atomic mass = 16) combine to give a compound having 75.8% of X. The formula of the compound is:

Equal volumes of 10% (v/v) of HCl is mixed with 10% (v/v) NaOH solution. If density of pure NaOH is 1.5 times that of pure HCl then the resultant solution be :

Similar to the % labelling of oleum, a mixture of H₃PO₄ and P₄O₁₀ is labelled as (100 + x) % where x is the maximum mass of water which can react with P₄O₁₀ present in 100 gm mixture of H₃PO₄ and P₄O₁₀. If such a mixture is labelled as 127% Mass of P₄O₁₀ is 100 gm of mixture, is

C₆H₅OH(g) + O₂(g) → CO₂(g) + H₂O(l)

The magnitude of volume change if 30 ml of C₆H₅OH (g) is burnt with an excess amount of oxygen, is

How many moles of NaCl should be dissolved in 100 mL of water to get 0.2 M solution?​

If 50 gm oleum sample rated as 118% is mixed with 18 gm water, then the correct option is

The minimum mass of mixture of A₂ and B₄ required to produce at least 1 kg of each product is:
(Given At. mass of ‘A’ = 10; At mass of ‘B’ = 120) 5A₂ + 2B₄ → 2AB₂  + 4A₂B

The % by volume of C₄H₁₀ in a gaseous mixture of C₄H₁₀, CH₄ and CO is 40. When 200 ml of the mixture is burnt in excess of O₂. Find volume (in ml) of CO₂ produced.

74 gm of sample on complete combustion gives 132 gm CO₂ and 54 gm of H₂O. The molecular formula of the compound may be

Density of a gas relative to air is 1.17. Find the mol. mass of the gas. [M_air = 29 g/mol]

Number of moles of hydroxide ions in 0.3L of 0.005M solution of Ba (OH)₂ is: