At 760 torr pressure and 20^(@)C tempreature , 1 L of water dissolves 0.04 gm of pure oxygen or 0.02 gm of pure nitrogen. Assuming that dry air is compound of 20% oxygen and 80% nitrogen (by volume), the masses (in g/L) of oxygen and nitrogen dissolved by 1 L of water at 20^(@)C exposed to air at a total pressure of 706 torr are respectively :
3.0 g of non-volatile solute when dissolve in 1 litre water, shows an osmotic pressure of 2 atmosphere at 300 K. Calculate the molar mass of the solute. (R = 0.0821 litre atm K^(-1)"mol"^(-1) ).
If N_2 gas is bubbled through water at 293 K, how many millimoles of N_2 gas would dissolve in 1 litre of water? Assume that N_2 exerts a partial pressure of 0.987 bar. Given that Henry's law constant for N_2 at 293 K is 76.48 kbar.
H_2S a toxic gas with rotten egg like smell is used for qualitative analysis. If the solubility of H_2S in water at STP is 0.195m, calculate the Henry's law constant.
0 . 6 ml of acetic acid (CH_(3) CO OH) having density 1 . 0 6 g mL^(-1) dissolved in 1 litre of water . The depression in freezing point observed for this strength of acid was 0.0205 K. Calculate the Van't Hoff factor and dissociation constant of the acid .( K_(f) for water = 1. 86 K kg mol^(-1) )
What concentration of nitrogen should be present in a glass of water at room temperature? Assume a temperature of 25^@C , a total pressure of 1 atmosphere and mole fraction of nitrogen in air of 0.78. (K_H for nitrogen=8.42xx10^-17 M/(mm Hg))
At what partial pressure, oxygen will have a solubility of 0.06 gL^-1 in water at 293 K? Henrys law constant (k_H) of O_2 in water at 303 K is 46.82 k bar. (Assume the density of the solution to be and same as that of water)
19.5 g of CH_2FCOOH is dissolved in 500 g of water. The depression in the freezing point of water observed is 1.0° C. Calculate the van’t Hoff factor and dissociation constant of fluoroacetic acid.
A solution is prepared by dissolving 1.0 g of NaOH in water to get 250 ml of solution . Calculate its molarity .
0.1 mole of NaCl has more osmotic pressure than 0.1 mole of sugar dissolved in one litre of water. Why ?
NARENDRA AWASTHI-DILUTE SOLUTION-Level 3 - Match The Column
