11th NCERT Chemistry Chapter 1
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– Important Topics:
1. Stoichiometry and Stoichiometric Calculations:
– Involves calculating masses or volumes of reactants and products in a chemical reaction based on a balanced equation.
2. Limiting Reagent:
– The reactant that is consumed first in a reaction, limiting the amount of product formed.
3. Reactions in Solutions:
– Understanding the expression of substance amount in a solution using terms like mass per cent, mole fraction, molarity, and molality.
4. Balancing Chemical Equations:
– Ensuring the number of atoms of each element is the same on both sides of the equation to follow the law of conservation of mass.
These topics cover key concepts in the chapter, including stoichiometry, limiting reagents, solutions, and balancing chemical equations【4:0†source】【4:1†source】【4:4†source】.
Calculate the molar mass of H2O.
Calculate the mass per cent of different elements present in sodium sulphate (Na2SO4).
Determine the empirical formula of an oxide of iron with 69.9% iron and 30.1% dioxygen by mass.
Calculate the amount of carbon dioxide produced when 1 mole of carbon is burnt in air.
Calculate the concentration of nitric acid in moles per litre in a sample with a density of 1.41 g mL⁻¹ and 69% mass per cent of nitric acid.
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