why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?
- 5 Answers
- 20110 Views
- Avra, Granules, Orchid, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / aditya
Beacuse the ionic Product of water At 25oC 1×10-14
please let me know if it is wrong
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / falguni patel
We know that
H+ + OH- --> H2O
Equilibrium constant Kw is
[H+] [OH-] = Kw = 1*10^-14
By applying -log on both side
-log [OH-] - log [H+] = 14
We know that pH = -log [H+]
So pH = 14 - (-log [OH-])
From this eq that the higher the concentration of OH- ions, the lower the value of -log[OH-]. If the concentration of OH- ions reaches 1mol/dm3, the value of-log [OH-] is zero, which acc to eq gives pH 14.
If conc exceed from 1 ,-log [OH-] would be negative and pH is grater than 14.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / ankit
H2O dissociates in 7 H and 7 OH so max 14 and 7 neutral
| Is This Answer Correct ? | 9 Yes | 6 No |
Answer / naveen gutta
Go through this link I hope you'll find the right answer
http://chemwiki.ucdavis.edu/Physical_Chemistry/Acids_and_Bases/Aqueous_Solutions/The_pH_Scale
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ankit
water dissociates in 7H,7OH so it would be max14 and 7 is neutral
| Is This Answer Correct ? | 2 Yes | 9 No |
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
what is the defination of calibration & verification?
why octanol used to determine the partition coefficient ?
what you do when compound having dwel wavelength?
what is the criteria for choosing capillary column in GC??is it dependent on sample load?
In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?
how many types of Proceing methods?
why KF factor is between 4.5 to 7.5 mg/ml ? why ? why sometime pyridine is used in analysis like in raw material solvent like acetone etc?
11 Answers Aurobindo, GVK, Sohan Healthcare,
Why we use uracil and caffeine in hplc calibration
what is the difference between system precision and method precision?
3 Answers Teva Pharmaceuticals,
what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?
In the test for control of absorbance in UV calibration why do we use only potassium dichromate and what is purpose of taking a specified amount of 57.0-63.0mg?
8 Answers Aurobindo, Cipla, FDC,
Organic Chemistry 
