What Are Units Of Molality And Molarity Class 11 Chemistry CBSE

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsWhat are units of molality and molarity?AnswerVerified562.2k+ viewsHint: The molality is referred to the moles of a solute with respect to the mass of a solvent, while the molarity describes the moles of a solute in relation to the volume of a solution.Complete step by step solution: Both molarity and molality are used to measure concentration of a chemical solution.Firstly, it is important to clear that $solution=solute+solvent$ .Molality(m) is the amount of a solute dissolved in a certain mass of solvent, also called molal concentration. It is defined as the number of moles of a solute per kilogram of a solvent.\[molality(m)=\dfrac{{{n}_{solute}}}{{{w}_{solvent}}}\] Where ${{n}_{solute}}=$ number of moles of solute added${{w}_{solvent}}=$ mass of solvent in kilogramsTherefore , the units of molality is mol/kg or $mol.k{{g}^{-1}}$ . Molarity (M) is the amount of a substance added in a certain volume of solution. Molarity is defined as the number of moles of a solute added in a solution per liter of solution. Molarity can also be called as the molar concentration of a solution.\[Molarity(M)=\dfrac{{{n}_{solute}}}{{{V}_{solution}}}\] Where, ${{n}_{solute}}=$ number of moles of solute added${{V}_{solution}}=$ volume of solution in liters.Therefore, the units of molarity is mol/L or $mol.{{L}^{-1}}$ .Note: Molarity(M) and molality(m) should not be confused with Normality(N). Normality is also used to measure concentration of chemical solution but it is defined as the number of gram equivalents of solute present in one litre of a solution. Recently Updated PagesMaster Class 12 Business Studies: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Maths: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessMaster Class 12 Chemistry: Engaging Questions & Answers for SuccessMaster Class 12 Business Studies: Engaging Questions & Answers for SuccessMaster Class 12 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Maths: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessMaster Class 12 Chemistry: Engaging Questions & Answers for Success

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