How to do Stoichiometry calculations in basic concepts of Chemistry
Stoichiometry calculations gives the relationship between reactants and products. Here, we will discuss about the calculations in terms of moles, masses and volumes. What is Stoichiometry coefficients The coefficients of the balanced chemical equation is called stoichiometric coefficients. For example : CaCO3 + 2HCl ➡️ CaCl2 + H2O + CO2 1 mole 2 moles 1 […]
How to find the empirical formula and molecular formula
Empirical formula is the simplest whole number ratio of various elements in the compound. Molecular formula is the actual number of atoms present in the compound. Here, we will discuss more about the E.F. and molecular formula of the compound. What is empirical formula E.F. is the simple whole number ratio of elements in the […]
What is mole concept and how to find the mole of an element
Avogadro’s number helps in many numerical calculations. Here, we will discuss the important relationships in the mole concept. Avogadro’s number may be defined as the number of atoms present in one gram atom of the element. It is also equal to the number of molecules present in one gram molecule of the substance. 1 mole […]
What is the law of chemical combination
What are the different laws of chemical combination ? We study the different aspects of chemical reactions in the various chemical combinations. Law of conservation of mass : Laws of chemical combination In all physical and chemical changes, total mass of the system remains constant. It means matter is neither created nor destroyed. Physical changes […]
What is significant figure and how to calculate it
Significant figures is the total number of digits in a number . Here, are some rules for finding the value of significant figures. Rules for determining significant figures in addition and subtraction Here is the rule of finding the result of addition and subtraction. It should have the same number of decimal places as the […]
What is the preparation, properties and uses of Sodium hydroxide
Sodium hydroxide, NaOH has the common name of caustic soda. Here, we will study about the preparation, properties and uses of sodium hydroxide, (Caustic soda) Introduction of Sodium Hydroxide (Caustic Soda), NaOH Preparation of NaOH by Castner-Keller cell There is a large rectangular iron tank. Ionisation of NaCl takes place on passing electricity through it. […]
