explain by giving examples how does balanced chemical equation tells us about the ratio of volumes of gases of reactants and products
Answers
Quantitative chemistry calculations Help for problem solving in doing reacting gas volume calculations. Practice revision questions on gas volume ratios of reactants and products from balanced equations, using experiment data, making predictions. This page describes and explains, with fully worked out examples, how to calculate the volumes of gaseous reactants or products formed from given volumes of reactants or products. You need to know how to apply Avogadro's Law and Gay-Lussac's Law of combining volumes. These particular calculation methods simply use the ratio of reactant gases or product gases given by the symbol equation. From reacting gas volumes you can also use the mole concept to calculate the mass of products formed. You can also work out the molecular formula of an unknown gaseous compound from reacting volumes (historical method - much more sophisticated methods these days!). Online practice exam chemistry CALCULATIONS and solved problems for KS4 Science GCSE/IGCSE CHEMISTRY and basic starter chemical calculations for A level AS/A2/IB courses. These revision notes and practice questions on how to do reacting gas volume ratio chemical calculations (using Gay-Lussac's law) and worked examples should prove useful for the new AQA, Edexcel and OCR GCSE (9–1) chemistry science courses
Example:
H2+ Cl2-----> HCl
Let us consider that all the elements and compound formed are gaseous.
Balancing the equation:
1H2+ 1Cl2------> 2HCl
when 1 mole of hydrogen reacts with 1 mole of chlorine then it yields 2 moles of hydrochloric acid if gaseous.
For more detail watch:- physics wallah class 11 chemistry ch1. or search laws of chemical combinations class 11 physics wallah.