Find the ph value, Chemistry

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

Posted Date: 3/12/2013 3:34:45 AM | Location : United States







Related Discussions:- Find the ph value, Assignment Help, Ask Question on Find the ph value, Get Answer, Expert's Help, Find the ph value Discussions

Write discussion on Find the ph value
Your posts are moderated
Related Questions
When an egg is boiled, the proteins present inside the egg get denatured and coagulate. After boiling the egg, the water present in it is absorbed by the coagulated protein through

Q.   Write short note on units of hardness and their relationship. Sol. Units of hardness and their relationship. (1)         Parts Per million (ppm): It is defined as t

what is application of electrolysis ?

What do you understand by molar conductivity at infinite dilution

Why a covalent bond is directional? The covalent bond is formed as a result of pairing of two electrons in the atomic orbitals of two atoms. The bond then should lie along the

principle and application of potentiometry in biochemistry

chemical reacation of sucrose

#formation of salicylic acidquestion..

Iodometric Titrations and Iodimetric The reduction of free iodine to iodide ions and oxidation of iodide ions to free iodine takes place in these titrations. I 2 + 2e - →

Introduction Methods of characterization aim to calculate the products of a reaction. The level of detail expected depends on the circumstances, and calculates the range of met