Popular Questions of Class 12th chemistry. If the density of solution is 1.2 g mL-1, then what shall be the molarity of the solution? Answer of Draw structures of the following derivative. Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride. Calculate the van't Hoff factor and dissociation constant of fluoroacetic acid. Write the structures of the expected products of aldol condensation and Cannizzaro reaction. (i) The 2,4-dinitrophenylhydrazone of benzaldehyde (i) The 2,4-dinitrophenylhydrazone of benzaldehyde asked Dec 26, 2017 in Chemistry by sforrest072 ( … H2S, a toxic gas with rotten egg like smell, is used for the qualitative analysis. draw structures of the following derivatives... General Principles and Processes of Isolation of Elements. Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Ethanal is more reactive towards nucleophilic addition reactions than propanone. Draw structures of the following derivatives. Aldol v. Hemiacetal vi. (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage. (i) The 2,4-dinitrophenylhydrazone of benzaldehyde, (vi) The methyl hemiacetal of formaldehyde. (iii) Cl-(CH2)4-Cl into hexan-1, 6-diamine? The structure of the semicarbazone of cyclobutanone . (ii) An electrolyte, NaCl is added to hydrated ferric oxide sol. Give reasons for the following: (a). The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Semicarbazone iv. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. A-1, Acharya Nikatan, Mayur Vihar, Phase-1, Central Market, New Delhi-110091 Illustrate with examples the limitations of Williamson synthesis for the preparation of certain types of ethers. Draw the structures of the following derivatives : (a) Propanone oxime. Similar Questions . Discuss the trends in chemical reactivity of group 15 elements. All Rights Reserved. 19.5 g of CH2FCOOH is dissolved in 500 g of water. A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the solution and the new vapour pressure becomes 2.9 kPa at 298 K. Calculate: Copyright © 2020 saralstudy.com. (iii) Electric current is passed through a colloidal sol? (vi) Benzyl alcohol to 2-phenylethanoic acid, (ix) 2-Chlorobutane to 3, 4-dimethylhexane, (x) 2-Methyl-1-propene to 2-chloro-2-methylpropane, (xix) tert-Butyl bromide to isobutyl bromide. Draw the structures of the following derivatives : Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Let A, B, C be the feet of perpendiculars from a point P on the x, y, z-axis respectively. Acetal iii. Calculate the mass of a non-volatile solute (molar mass 40 g mol-1) which should be dissolved in 114 g octane to reduce its vapour pressure to 80%. A 5% solution (by mass) of cane sugar in water has freezing point of 271 K. Calculate the freezing point of 5% glucose in water if freezing point of pure water is 273.15 K. Calculate the mass of urea (NH2CONH2) required in making 2.5 kg of 0.25 molal aqueous solution. Also find the composition of the vapour phase. (iv) The semicarbazone of cyclobutanone. Oxime. Answers (1) M manish. 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? Solution for Draw structures of the following derivatives. ) Q 12.5 Draw structures of the following derivatives. Answer (i) (ii) (iii) (iv) (v) (vi) Previous Question Next Question. Give simple chemical tests to distinguish between the following pairs of compounds. Draw structures of the following derivatives. If the solubility of H2S in water at STP is 0.195 m, calculate Henry's law constant. The depression in the freezing point of water observed is 1.0°C. (i) When a beam of light is passed through a colloidal sol. (a) the 2,4-dinitrophenylhydrazone of benzaldehyde (b) the semicarbazone of cyclobutanone (c) cyclopropanone oxime (d) the ethylene acetal of hexan-3-one (e) acetaldehyde dimethyl acetal (f) the methyl hemiacetal of formaldehyde (g) the (E) isomer of the ethyl imine of propiophenone (h) the hemiacetal form of 5-hydroxypentanal . (i) The 2,4-dinitrophenylhydrazone of benzaldehyde (ii) Cyclopropanone oxime (iii) Acetaldehydedimethylacetal (iv) The semicarbazone of cyclobutanone (v) The ethylene ketal of hexan-3-one (vi) The methyl hemiacetal of formaldehyde. Draw structures of the following derivatives. Give simple chemical test to distinguish between (i) Propanal and propanone. Henry's law constant for CO2 in water is 1.67 x 108Pa at 298 K. Calculate the quantity of CO2in 500 mL of soda water when packed under 2.5 atm CO2 pressure at 298 K. How the following conversions can be carried out? Post Answer. the (E) isomer of the ethyl imine of propiophenone Write any two characteristics of Chemisorption. Draw the structures of the following derivatives: (a) The 2, 4-Dinibophenylhydrazone of benzaldehyde, Draw structures of the following derivatives. (i) Methanal (ii) 2-Methylpentanal, (iii) Benzaldehyde (iv) Benzophenone, (v) Cyclohexanone (vi) 1-Phenylpropanone, (vii) Phenylacetaldehyde (viii) Butan-1-ol. 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