Choose the correct answer out of the following choices.
Explanation The number of particles increases in solution due to electrolytic dissociation. Reason is the correct explanation for assertion. Assertion A: The molar conductance of weak electrolyte is low as compared to that of strong electrolytes at moderate concentrations. Assertion. Apne doubts clear karein ab Whatsapp (8 400 400 400) par Electrolyte conductivity increases with a rise in temperature, as the viscosity of the solvent decreases exponentially, and the degree of dissociation increases. of Derivatives, Application MHA Unlock Guidelines Schools, Colleges can Run at 50 Percent Hall Capacity. and Differentiability. (ii) Both assertion and reason are true and the reason is not the correct explanation of assertion. NEET 2020 Admissions - MBBS seats reserved for child of COVID-19 warriors who lost their lives due to COVID-19 or died accidentally during COVID-19 duty. Solutions of two electrolytes ‘A’ and ‘B’ are diluted. Related to Circles, Introduction Know exam pattern, new marking scheme, sample paper & more. equilibrium constant, called the dissociation constant. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. NEET 2021 Registration, Exam Pattern, Syllabus, Eligibility Details & More. Assertion : Λ m for weak electrolytes shows a sharp increase when the electrolytic solution is diluted. Question From class 12 Chapter Electrochemistry, Both assertion and reaction are true and the reason is correct explanation for assertion, Both assertion and reason are true and reason is not correct explanation for assertion. ) For e.g. CBSE has reduced the syllabus for class 10 & 12 exam 2021, date sheet can release soon.
Reason : Kohlrausch's law is applicable to both strong and weak electrolytes. Assertion : Equivalent conductance of all electrolytes decreases with increasing concentration. Therefore, limiting molar conductivity, Ëm° cannot be obtained by extrapolation of molar conductivity to zero concentration. Ostwald’s dilution law α= is on 1886 in Riga proved discovery if concentration C decreases dissociation degree α increases and remains pH=const. of Integrals, Continuity The degree of dissociation of a weak electrolyte increases Ask for details ; Follow Report by Panky2 25.03.2018 Log in to add a comment JEE Main 2021: January Session likely to be postponed to February. Know NEET 2021 registration, exam pattern, syllabus, eligibility details & more. Degree of ionization is inversely proportional to molar concentration. Assertion is true but the reason is False. Dissociation increases with dilution because each molecule requires certain amount of energy to break bonds. Molar conductance of weak electrolyte increases with dilution'. C K dis
Reason. At infinite dilution, the percentage ionisation of both strong and weak electrolytes is. With the increase in dilution, the degree of dissociation increases and as a result molar conductance increases. (v) Assertion is false but reason is true. Know steps to download MPBSE syllabus & complete details related to the MP board exam 2021! NEET 2021 will be conducted in the first week of May 2021. why degree of dissociation of weak electrolyte increases with increase of dilution?
Reason : For weak electrolytes degree of dissociation increases with dilution of solution. MP board exam 2021 class 10 & 12 syllabus reduced by 30%. Consider HCl, it needs a certain amount of energy to dissociate into H+ and Cl-. This preview shows page 49 - 69 out of 69 pages.. (1)Fraction of dissociation of a weak electrolyte increases as electrolyte is diluted. Weak electrolytes have lower molar conductivities and lower degree of dissociation at higher concentrations which increases steeply at lower concentrations. The Λm of ‘B’ increases 1.5 times. The degree of dissociation ... chemistry The degree of dissociation ( α ) of a weak electrolyte, A x B y is related to van't Hoff factor ( i ) by the expression : Reason : For weak electrolytes degree of dissociation increases with dilution of solution.
Reason (R) For weak electrolytes degree of dissociation increases with dilution of solution. MHA unlock guidelines Schools, Colleges can run at 50% hall capacity. (ostwald's law). Assertion (A) for weak electrolytes shows a sharp increase when the electrolytic solution is diluted. (iii) Assertion is true but the reason is false. Reason : For weak electrolytes degree of dissociation increases with dilution of solution… acetic acid (CH 3COOH), dissociation constant and degree of dissociation (α) interconnected by the expression: 2 1 c K α = −α This equation is known as Ostwald's dilution law, it is applicable for weak 1-1 electrolytes only. How does dilution affect the conductivity of strong electrolytes and weak electrolytes ? Storonger is the acid weaker is its conjugate base. Numbers and Quadratic Equations, Introduction Degree of ionization of weak electrolyte increases with dilution. Assertion : Conductivity of all electrolytes decreases on dilution. Try it now. the whole of the electrolyte dissociates. If a small amount of a strong electrolyte like Ammonium chloride (NH 4 Cl) is added to the aqueous solution of NH 4 OH, it gets dissociated and equilibrium exists, as. Know MHA unlock guidelines, unlock 6.0 & education institutions guidelines. Statement-1: Molar conductivity increases with decrease in concentration for weak electrolytes. Give reason . At infinite dilution, the percentage ionisation for both strong and weak electrolytes is. for weak electrolytes shows a sharp increase when the electrolytic solution is diluted. The value of x is . Assertion : The molar conductance of weak electrolytes at infinite dilution is equal to sum of the molar conductances of cation and anion. bhi. Check complete JEE Main 2021 exam update and other important details related to exams! Reason R: Weak electrolytes at moderate concentrations dissociate to a much greater extent as compared to strong electrolytes. Expressions and Identities, Direct Algebraic to Three Dimensional Geometry, Application Assertion : Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted. to Trigonometry, Complex It may be shown that for a weak binary electrolyte, e.g. Here NH 4 + ions are common hence their concentration increases. and Inverse Proportions, Areas to Euclids Geometry, Areas Conversely, such electrolytes have lower molar conductivity at higher concentrations due to a reduced degree of dissociation.