Find the ph value, Chemistry

Assignment Help:

50ml of 0.1M NH4OH ,25ml NH4Cl weere used to make a buffer . what is the PH is if Pkbis 4.8?

Solution) The given buffer is a base buffer

[NH4OH] =[(50*0.1)/75]

[NH4Cl] =[(25*2)/75]

From the principle V1M1=V2M2

For a base buffer pOH = pKb + log [Salt/Base]

thus pOH 4.8+ log [{(25*2)/75}/{(50*0.1)/75}] = 4.8+ log (10) = 4.8+1 =5.8

Therefore pH = (14-pOH) = (14-5.8) = 8.2


Related Discussions:- Find the ph value

Project, Preparation of saturated calomel electrode and determination of st...

Preparation of saturated calomel electrode and determination of standard potentials of electrodes such as Cu 1 Cu, Zn 1 Zn, etc. Comparison of the potential values with values from

Saturated and unsaturated hydrocarbons, Saturated and unsaturated hydrocarb...

Saturated and unsaturated hydrocarbons The compounds of carbon and hydrogen in which carbon atoms are linked to each other by single covalent bonds(C-C) are known as alkanes. T

Factors affecting development of a new product, Q. Factors affecting develo...

Q. Factors affecting development of a new product? The product development and marketing is not just selling a product, but is a highly multi-disciplinary domain comprising of

#title.REACTIONA KINETICS, HOW MANY HALF LIVES ARE REQUIRED FOR THE CONCENT...

HOW MANY HALF LIVES ARE REQUIRED FOR THE CONCENTRATION OF REACTANT TO DECREASE BY 1.56 PERCENT OF ITS ORIGINAL VALUE

Uses of dihydric alcohols, Uses of Dihydric alcohols (a) Dihydric alcoh...

Uses of Dihydric alcohols (a) Dihydric alcohols are used as antifreeze in car radiators. (b) Dihydric alcohols is used in the manufacture of dacron, dioxane etc. (c) Dihy

Periodic elements, What periodic elements are found in computers

What periodic elements are found in computers

Periodicity, characteristics of group 13 elements

characteristics of group 13 elements

Soaps, why do soap not work in hard water ?

why do soap not work in hard water ?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd