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

Standard electrode potential, why the hydrogen gases are used platinium pla...

why the hydrogen gases are used platinium plate in she

HYDROGEN, #questionWHY LANE''S PROCESS IS ALSO KNOWN AS VIVIFICATION PROCES...

#questionWHY LANE''S PROCESS IS ALSO KNOWN AS VIVIFICATION PROCESS?..

Rubber, Account for the soft nature of rubber material

Account for the soft nature of rubber material

The value of azimuthal quantum number, When the value of azimuthal quantum ...

When the value of azimuthal quantum number is 3, magnetic quantum number can have values: (1) + 1, 0, - 1           (2) + 2, + 1, 0, - 1, - 2  (3) - 3, - 2, - 1, - 0, + 1

Volumetric analysis - stoichiometry, you are provided with a monobasic acid...

you are provided with a monobasic acid , HX with a concentration in the range of 0.5moldm-3. You arerequired to plan and carry out an experiment to determine that exact concentrati

What do you mean by permissible level, Q. What do you mean by Permissible l...

Q. What do you mean by Permissible level ? To regulate and enforce safety about the use of these synthetic colours and dyes PFA, 1954 has covered their use in part IV comprisin

Naming, What does this mean? H+/H2O

What does this mean? H+/H2O

The wavelength associated with its motion, A cricket ball of 0.5 kg  is mov...

A cricket ball of 0.5 kg  is moving with a velocity of  100 m/ sec . The wavelength associated with its motion is: (1) 1/ 100cm                        (2) 6.6 x10 -34 m

Alcohols, How do we prepare trihydric alcohols?

How do we prepare trihydric alcohols?

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