Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
(a) Explain in terms of ionic equilibria why the aqueous solution of a salt derived from a weak acid and a strong base (e.g. sodium phenolate) has a pH greater than 7.
(b) By considering the equilibrium constant (Ka) of a weak acid, and the effect on Ka when a salt of that acid is added to the solution, derive the Henderson-Hasselbalch equation for buffer solution pH.
(c) Explain why the Henderson-Hasselbalch equation sometimes features a term written as + log10 gA- where gA- represents the activity coefficient of the common anion, and hence describe the effect of increasing the concentration of both the acid and salt in the buffer formulation on buffer performance.
(d) An aqueous buffer solution is formulated containing 0.010 mol dm-3 sodium phenolate to which phenol is added. Given that the pKa of phenol is 9.98, calculate the concentration of phenol required to produce a pH of exactly 9.65 (you may assume that gA- = 1).
Molecular Formula Molecular formula of a substance provides the actual number of atoms that present in one molecule of the substance. Molecular formula = n * Empirical fo
Q. Explain Lead chamber process? Lead chamber process, is the older of the two processes. In this process SO 2 , is produced by burning S or roasting pyrites. S + O 2 -
Indicate the nature of bonding in diamond: (1) Covalent (2) Ionic (3) Coordinate (4) Hydrogen Ans: Covalent
how could i make better the project ion chart paper
what are the different methods for purifying the organic compounds with examples and applications on these methods in our daily lives or in industry?
Liebermann's nitroso reaction While phenol is reacted with NaNO 2 and concentrated H 2 SO 4 , it provides a deep green or blue colour which changes to red on dilution with wa
Types of polymerization Sol. Types of polymerization: polymerization is a process in which the joining together of many small molecules to form very large molecule called po
how can we prepare adernaline from cyclohexane
explain the law of chemical combination
Illustrate and demonstrate that, for correct mass balance, relative amount of two co-existing phases or micro constituents should be as given by lever rule. The lever rule giv
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd