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The major components are oxygen and nitrogen with approximate proportion of 20% is to 79% by volume at 298 K. 3 years ago Shilpi98 class 12 cbse ncert solutions Benzene and toluene form ideal solutions over the entire range of composition. The vapour pressure of pure benzene and toluene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. 3 years ago Shilpi98 class 12 cbse ncert solutions 100 g of liquid A (molar mass 140 g mol^-1) was dissolved in 1000 g of liquid B (molar mass 180 g mol^-1). The vapour pressure of pure liquid B was found to be 500 torr. 3 years ago Shilpi98 class 12 cbse ncert solutions Vapour pressure of water at 293 K is 17.535 mm Hg. Calculate the vapour pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water. 3 years ago Shilpi98 class 12 cbse ncert solutions Henry's law constant for the molality of methane in benzene at 298 K is 4.27 x 10^5 mm Hg. Calculate the solubility of methane in benzene at 298 Kunder 760 mm Hg. 3 years ago Shilpi98 class 12 cbse ncert solutions 19.5 g of CH2FCOOH is dissolved in 500 g of water. The depression in the freezing point of water observed is 1.0°C. 3 years ago Shilpi98 class 12 cbse ncert solutions Calculate the depression in the freezing point of water when 10 g of CH3CH2CHClCOOH is added to 250 g of water. Ka = 1.4 x 10^-3, Kf = 1.86 3 years ago Shilpi98 class 12 cbse ncert solutions The depression in freezing point of water observed for the same amount of acetic acid, trichloroacetic acid and trifluoroacetic acid increases in the order given above. Explain briefly. 3 years ago Shilpi98 class 12 cbse ncert solutions Calculate the amount of benzoic acid (C6H5COOH) required for preparing 250 mL of 0.15 M solution in methanol. 3 years ago Shilpi98 class 12 cbse ncert solutions Nalorphene (C19H21NO3), similar to morphine, is used to combat withdrawal symptoms in narcotic users. Dose of nalorphene generally given is 1.5 mg. 3 years ago Shilpi98 class 12 cbse ncert solutions Calculate the mass percentage of aspirin (C9H8O4) in acetonitrile (CH3CN) when 6.5 g of C9H8O4 is dissolved in 450 g of CH3CN. 3 years ago Shilpi98 class 12 cbse ncert solutions If the solubility product of CuS is 6 x 10^-16, calculate the maximum molarity of CuS in aqueous solution. 3 years ago Shilpi98 class 12 cbse ncert solutions If the density of some lake water is 1.25 g mL^-1 and contains 92 g of Na^+ ions per kg of water, calculate the molality of Na^+ ions in the lake. 3 years ago Shilpi98 class 12 cbse ncert solutions Amongst the following compounds, identify which are insoluble, partially soluble and highly soluble in water? 3 years ago Shilpi98 class 12 cbse ncert solutions Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain. Cyclohexane, KCl, CH3OH, CH3CN. 3 years ago Shilpi98 class 12 cbse ncert solutions Suggest the most important type of intermolecular attractive interaction in the following pairs. 3 years ago Shilpi98 class 12 cbse ncert solutions At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration? 3 years ago Shilpi98 class 12 cbse ncert solutions Two elements A and B form compounds having formula AB2 and AB4. When dissolved in 20 g of benzene (C6H6), 1 g of AB2 lowers the freezing point by 2.3 K whereas 1.0 g of AB4 lowers it by 1.3 K. 3 years ago Shilpi98 class 12 cbse ncert solutions Page 1 / 5 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? 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