NCERT | Class 12 | Chemistry Chapter 2 Solutions | Complete Exercise Solution скачать в хорошем качестве

NCERT | Class 12 | Chemistry Chapter 2 Solutions | Complete Exercise Solution

Hi guys, This Dr. Nileshkumar Vala from My Smart Class, and in this video I am going to teach you all about Class 12 Chemistry Chapter 2 Solutions | Complete Exercise Solution 2.1 to 2.41 in single video. 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example. 2.2 Give an example of a solid solution in which the solute is a gas. 2.3 Define the following terms:(i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage. 2.4 Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is 1.504 g mL–1? 2.5 A solution of glucose in water is labelled as 10% w/w, what would be the molality and mole fraction of each component in the solution? 2.6 How many mL of 0.1 M HCl are required to react completely with 1 g mixture of Na2CO3 and NaHCO3 containing equimolar amounts of both? 2.7 A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution. 2.8 An antifreeze solution is prepared from 222.6 g of ethylene glycol (C2H6O2) and 200 g of water. 2.9 A sample of drinking water was found to be severely contaminated with chloroform 2.10 What role does the molecular interaction play in a solution of alcohol and water? 2.11 Why do gases always tend to be less soluble in liquids as the temperatureis raised? 2.12 State Henry’s law and mention some important applications. 2.13 The partial pressure of ethane over a solution containing 6.56 × 10–3 g of ethane is 1 2.14 What is meant by positive and negative deviations from Raoult's law and how is the sign 2.15 An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the 2.16 Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two 2.17 The vapour pressure of water is 12.3 kPa at 300 K. Calculate vapour pressure of 1 molal 2.18 Calculate the mass of a non-volatile solute (molar mass 40 g mol–1) which should be 2.19 A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour 2.20 A 5% solution (by mass) of cane sugar in water has freezing point of 271K. Calculate the . 2.21 Two elements A and B form compounds having formula AB2 and AB4. When dissolved in 2.3 K whereas 1.0 g of AB4 lowers it by 1.3 K. The molar depression constant for benzene is 2.22 At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 2.23 Suggest the most important type of intermolecular attractive interaction in the following pairs. (i) n-hexane and n-octane 2.24 Based on solute-solvent interactions, arrange the following in order of increasing 2.25 Amongst the following compounds, identify which are insoluble, partially soluble and 2.26 If the density of some lake water is 1.25g mL–1 and contains 92 g of Na+ ions per kg of 2.27 If the solubility product of CuS is 6 × 10–16, calculate the maximum molarity of CuS in 2.28 Calculate the mass percentage of aspirin (C9H8O4) in acetonitrile (CH3CN) when 6.5 g of 2.29 Nalorphene (C19H21NO3), similar to morphine, is used to combat withdrawal symptoms 2.30 Calculate the amount of benzoic acid (C6H5COOH) required for preparing 250 mL of 0.15 2.31 The depression in freezing point of water observed for the same amount of acetic acid, 2.32 Calculate the depression in the freezing point of water when 10 g of CH3CH2CHClCOOH 2.33 19.5 g of CH2FCOOH is dissolved in 500 g of water. The depression in the freezing point 2.34 Vapour pressure of water at 293 K is 17.535 mm Hg. Calculate the vapour pressure of 2.35 Henry’s law constant for the molality of methane in benzene at 298 K is 4.27 × 105 mm 2.36 100 g of liquid A (molar mass 140 g mol–1) was dissolved in 1000 g of liquid B (molar 2.37 Vapour pressures of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 2.38 Benzene and toluene form ideal solution over the entire range of composition. The vapour 2.39 The air is a mixture of a number of gases. The major components are oxygen and 2.40 Determine the amount of CaCl2 (i = 2.47) dissolved in 2.5 litre of water such that its 2.41 Determine the osmotic pressure of a solution prepared by dissolving 25 mg of K2SO4 in 2 Tools that I regularly use. 🎤 Used mic: https://amzn.to/2SGomkD http://fkrt.it/1fFUnENNNN 🔭 Tripod for camera https://amzn.to/35Nbo9Z http://fkrt.it/GcMylOuuuN 💡 LED VIDEO LIGHT http://amzn.to/2wxpa1x http://fkrt.it/1fTlKENNNN 👉 For Advertising & Collabs: ndvutube@gmail.com 👉 Visit our Website: https://www.mysmartclass9.blogspot.com 👉 Follow On Twitter: @nileshdv89 👉 Follow On Instagram: my_smartclass 👉 Telegram channel: t.me/MySmartClass_YouTube 🎼 Music Credit: Inspiration 📷 Image Credit: https://www.pexels.com/, https://pixabay.com/ 🎬 Video Credit: https://www.pexels.com/. https://pixabay.com/