What is unit of pH?

Answer Posted / arash.babakhanian

we can define the PH as belows :

1)PH=-logaM

or
2)PH=n(Eobs-L)/0.059 that L is the constant related to
junction potential and other constants and Eobs is the
bindary potential

thus the unit of PH is Volts or milivolts

Is This Answer Correct ?    31 Yes 36 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

give clarity of linearity and range in method validation

1860


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

9437


what type of question will ask in the interview of lab chemist.

2884


My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1111


If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

1753






Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1458


How to choose the which salt is suitable for mobilephase

2646


What is the purpose of octyl silane columns?

3787


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

2707


why cone formation during dissolution?

323


Tell me about analytical method validation in QC

5548


why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

8912


Did anybody have method for acetyl cysteine effervescnce tablet

1808


What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1337


Why dissolution test is not performed in all of the products

2034