Chemistry questions
29404 published questions with worked solutions.
- In the depression of freezing point experiment, it is found that the _____ [IIT JEE 1999]
- 0.08 kg of M (mol. wt = 62) in 400 gm of water (freezing point of water = 273.13 K, K_f = 1.86), then the freezing point of...
- After adding a solute, freezing point of the solution decreases to -0.86. Calculate T_b if K_f = 1.86 and K_b = 0.521
- A 0.2 molal aqueous solution of a weak acid (HX) is 20% ionised. The freezing point of this solution is _____. (Given K_f = 1.86...
- The freezing point of a solution containing 4.8 g of a compound in 60 g of benzene is 4.48 °C. What is the molar mass of the...
- 30 10^ -4 kg of urea dissolved in water to make 500 mL aqueous solution and this solution is isotonic with cane-sugar solution....
- The boiling point of water (100 °C) becomes 100.52 °C, if 3 g of a non-volatile solute is dissolved in 200 mL of water. The...
- In an experiment, 1 g of a non-volatile solute was dissolved in 100 g of acetone (molecular mass = 58) at 298 K. The vapour...
- If density of a solvent is greater than 1 kg ,dm^ -3 , then the molarity (M) and molality (m) are related as _____
- To observe an elevation of boiling point of 0.05 °C, the amount of solute (Mol. Wt = 100) to be added to 100 g of water (K_b =...
- If 10 mL of 0.1 M aqueous solution of NaCl is divided into 1000 drops of equal volume, what will be the concentration of one drop?
- Van't Hoff equation for osmotic pressure of dilute solution is given as _____ [MH CET 2013]
- A small amount of a non-volatile solute is dissolved in 64.5 cm^3 of acetone (density: 0.791 g/cm^3 ). The vapour pressure of...
- The depression of freezing point of a solvent (b.p: 303 K) for a particular solution is 0.153 K. Calculate the molal elevation...
- Van't Hoff factor of centimolal solution of K_3[Fe(CN)_6] is 3.333. Calculate the percent dissociation of K_3[Fe(CN)_6]
- The vapour pressure of a solvent A is 0.80 atm. When a non-volatile substance B is added to this solvent its vapour pressure...
- 6.02 10^ 20 molecules of urea are present in 100 mL of its solution. The concentration of solution is _____
- 25 cm^3 of oxalic acid completely neutralised 0.064 g of sodium hydroxide. Molarity of the oxalic acid solution is _____
- 0.3 Molal aqueous solution of sucrose boils at 100.51 ℃. The boiling point of 0.7 molal aqueous solution of sucrose will...
- If 10 g of a solute was dissolved in 250 mL of water and osmotic pressure of the solution was found to be 600 mm of Hg at 288 K,...