A 75 gm 4% aqueous NaOH solution is distilled for some time. The water collected has a mass of 25 gms. To this distilled solution X gms of KOH is added, so that molality of OH ion in the resulting solution becomes 5. Find X?

1120 gm of 2 'm' urea solution is mixed with 2480 gm of 4 'm' urea solution. Calculate the molality of the resulting solution ?

A 7.0 M solution of KOH in water contains 28% by mass of KOH. What is density of solution in gm/ml ?

4 L of 0.02 M aqueous solution of NaCl was diluted by adding 1 L of water. The molality of the resultant solution is……..

4 L of 0.02 M aqueous solution of NaCl was diluted by adding 1 L of water. The molality of the resultant solution is……..

342 g of 20% by mass of ba (OH)_2 solution (sq.gr. 0.57 ) is reacted with 1200mL of 2MHNO_3 . If the final density of solution is same as pure water then molarity of the ion in resulting solution which decides the nature of the above solution is :

0.115 gm of sodium metal was dissolved in 500 ml of the solution in distilled water. Calculate the molarity of the solution ?

500 gm aq. NaOH solution contains 100 gm NaOH. Find (w/v)%

5 gm of K_2 SO_4 solution were dissolved in 250 ml of water. How many ml of this solution are needed to precipitate out 1.2 gm of BaSO_4 on addition of BaCI_2 ?

300 gm aq. NaOH solution contains 100 gm NaOH. Find (w/v)%

A solution is prepared by adding 5 g of a substance x to 18 g of water. Calculate the mass percent of the solute.