Class 11 Chemistry (Part-1) Chapter 1: Some Basic Concepts of Chemistry have introduced you with the importance and development of chemistry, its branches, the nature and scope of the subject, the states and classification of matter, as well as key concepts such as mass, volume, density, atomic and molecular masses, mole concept, and stoichiometry. This blog will provide you with exercises along with their solutions, which will help you understand the concepts more simply.<\/p>\n\n\n\n\n\n\n
Explore Notes of Class 11 Chemistry<\/strong><\/p>\n\n\n\n Below, we have provided you with exercises mentioned in the NCERT Class 11 Chemistry (Part-1) Chapter 1: Some Basic Concepts of Chemistry, along with their solutions.<\/p>\n\n\n\n (i) H2<\/sub>O (ii) CO2 <\/sub>(iii) CH4<\/sub><\/p>\n\n\n\n (i) 1 mole of carbon is burnt in air.<\/p>\n\n\n\n (ii) 1 mole of carbon is burnt in 16 g of dioxygen.<\/p>\n\n\n\n (iii) 2 moles of carbon are burnt in 16 g of dioxygen.<\/p>\n\n\n\n (i) Number of moles of carbon atoms.<\/p>\n\n\n\n (ii) Number of moles of hydrogen atoms.<\/p>\n\n\n\n (iii) Number of molecules of ethane.<\/p>\n\n\n\n enough water to make a final volume of up to 2 L?<\/p>\n\n\n\n If the mass of air at sea level is 1034 g cm\u20132<\/sup>, calculate the pressure in pascal.<\/p>\n\n\n\n CHCl3<\/sub>, supposed to be carcinogenic. The level of contamination was 15 ppm (by mass).<\/p>\n\n\n\n (i) Express this in per cent by mass.<\/p>\n\n\n\n (ii) Determine the molality of chloroform in the water sample.<\/p>\n\n\n\n (i) 0.0048<\/p>\n\n\n\n (ii) 234,000<\/p>\n\n\n\n (iii) 8008<\/p>\n\n\n\n (iv) 500.0<\/p>\n\n\n\n (v) 6.0012<\/p>\n\n\n\n (i) 0.0025<\/p>\n\n\n\n (ii) 208<\/p>\n\n\n\n (iii) 5005<\/p>\n\n\n\n (iv) 126,000<\/p>\n\n\n\n (v) 500.0<\/p>\n\n\n\n (vi) 2.0034<\/p>\n\n\n\n (i) 34.216<\/p>\n\n\n\n (ii) 10.4107<\/p>\n\n\n\n (iii) 0.04597<\/p>\n\n\n\n (iv) 2808<\/p>\n\n\n\n Which law of chemical combination is obeyed by the above experimental data? Give<\/p>\n\n\n\n Its statement.<\/p>\n\n\n\n A + B2<\/sub> \u2192AB2<\/sub><\/p>\n\n\n\n Identify the limiting reagent, if any, in the following reaction mixtures.<\/p>\n\n\n\n (i) 300 atoms of A + 200 molecules of B<\/p>\n\n\n\n (ii) 2 mol A + 3 mol B<\/p>\n\n\n\n (iii) 100 atoms of A + 100 molecules of B<\/p>\n\n\n\n (iv) 5 mol A + 2.5 mol B<\/p>\n\n\n\n (v) 2.5 mol A + 5 mol B<\/p>\n\n\n\n N2<\/sub> (g) + H2<\/sub> (g)\u00a0 2NH3 <\/sub>(g)<\/p>\n\n\n\n (i) Calculate the mass of ammonia produced if 2.00 \u00d7 10 3 g dinitrogen reacts with 1.00 \u00d7 103<\/sup> g of dihydrogen.<\/p>\n\n\n\n (ii) Will any of the two reactants remain unreacted?<\/p>\n\n\n\n (iii) If yes, which one and what would be its mass?<\/p>\n\n\n\n (i) 28.7 pm<\/p>\n\n\n\n (ii) 15.15 pm<\/p>\n\n\n\n (iii) 25365 mg<\/p>\n\n\n\n (i) 1 g Au (s)<\/p>\n\n\n\n (ii) 1 g Na (s)<\/p>\n\n\n\n (iii) 1 g Li (s)<\/p>\n\n\n\n (iv) 1 g of Cl2<\/sub> (g)<\/p>\n\n\n\nChapter 1<\/strong><\/td> Chapter 2<\/strong><\/td> Chapter 3<\/strong><\/td> Chapter 4<\/strong><\/td> Chapter 5<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n NCERT Solutions Class 11 Chemistry (Part-1) Chapter 1: Some Basic Concepts of Chemistry<\/h2>\n\n\n\n
Exercises<\/h2>\n\n\n\n
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<\/td> % Natural Abundance<\/strong><\/td> Molar Mass<\/strong><\/td><\/tr> 35<\/sup>Cl<\/td> 75.77<\/td> 34.9689<\/td><\/tr> 37<\/sup>Cl<\/td> 24.23<\/td> 36.9659<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \n
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Mass of dinitrogen<\/strong><\/td> Mass of dioxygen<\/strong><\/td><\/tr> 14 g<\/td> 16 g<\/td><\/tr> 14 g<\/td> 32 g<\/td><\/tr> 28 g<\/td> 32 g<\/td><\/tr> 28 g<\/td> 80 g<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \n
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