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The heat of neutralization of a strong acid by a strong base is a constant because :
  • a)
    The strong acid and strong base react completely
  • b)
    The strong acid and strong base dissociate completely and only H+ and OH- ions react in every case
  • c)
    The salt formed do not hydrolyse
  • d)
    There is no side reaction during neutralization
Correct answer is option 'B,C,D'. Can you explain this answer?
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Consider a solution of CH3COONH4 which is a salt of weak acid weak base. Theequilibrium involved in the solutions are :If we add these three reactions, then the net reaction isBoth CH3C00- and NH4 get hydrolysed independently and their hydrolysis depends on(i) their initial concentration(ii) the value of Kh which is Since both of the ions were produced from the same salt, their initial concentrations are same . Therefore unless untial the value of Kw/Kaand Kb is same, the degree of hydrolysis of ion cant be same.To explain why we assume that degree of hydrolysis of cation and anion is same, we need to now look at the third reaction i.e., combination of H+ and OH ions. It is obvious that this reaction happens only because one reaction produced H+ ion and the other produced OH ions. We can also note that this reaction causes both the hydrolysis reaction to occur more since their product ions are being consumed. Keep this thing in mind that the equilibrium which has smaller value of equilibrium conxtant is affected more by the common ion effect. For the same reason if for any reason a reaction is made to occur to a greater extent by the consumption of any one of the product ion, the reaction with the smaller value of equilibrium constant tends to get affected more.Therefore we conclude that firstly the hydrolysis of both the ions ocurs more in the presence of each other (due to consumption of the product ions) than in each other is absence. Secondly the hydrolysis of the ion which occurs to a lesser extent (due to smaller value of Kh) is affected more than the one whose Kh is greater. Hence we can see that the degree of hydrolysis of both the ions would be close to each other when they are getting hydrolysed in the presence of each other.Q.In a solution of NaHCO3 , the amphiprotic anion can under ionization to form H+ ion and hydrolysis to from OH ion.To calculat PH, suitable approximation is

The heat of neutralization of a strong acid by a strong base is a constant because :a)The strong acid and strong base react completelyb)The strong acid and strong base dissociate completely and only H+and OH- ions react in every casec)The salt formed do not hydrolysed)There is no side reaction during neutralizationCorrect answer is option 'B,C,D'. Can you explain this answer?
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The heat of neutralization of a strong acid by a strong base is a constant because :a)The strong acid and strong base react completelyb)The strong acid and strong base dissociate completely and only H+and OH- ions react in every casec)The salt formed do not hydrolysed)There is no side reaction during neutralizationCorrect answer is option 'B,C,D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The heat of neutralization of a strong acid by a strong base is a constant because :a)The strong acid and strong base react completelyb)The strong acid and strong base dissociate completely and only H+and OH- ions react in every casec)The salt formed do not hydrolysed)There is no side reaction during neutralizationCorrect answer is option 'B,C,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The heat of neutralization of a strong acid by a strong base is a constant because :a)The strong acid and strong base react completelyb)The strong acid and strong base dissociate completely and only H+and OH- ions react in every casec)The salt formed do not hydrolysed)There is no side reaction during neutralizationCorrect answer is option 'B,C,D'. Can you explain this answer?.
Solutions for The heat of neutralization of a strong acid by a strong base is a constant because :a)The strong acid and strong base react completelyb)The strong acid and strong base dissociate completely and only H+and OH- ions react in every casec)The salt formed do not hydrolysed)There is no side reaction during neutralizationCorrect answer is option 'B,C,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
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