why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?
- 5 Answers
- 20163 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 |
Difference between related substances & impurities
why IR graph or spectra comes down ? Any reason
How we choose the mobile phase for method development.?
what is assay in hplc
What is meaning of audit trail in hplc
3 Answers DRL, Lee Pharma, Raks Pharma,
What is reaction takes place when water content analysis is done
wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language
What is differences between the Instrument and Equipment
difference between HPLC & LC-MS
why chiral compounds will rotate the plane polarized light in SoR.
is ther any guidline is available for limt of peak fronting.and what is the limt of peak fronting.
In gas chromatographic analysis sometimes we use headspace, why it is required instead of manually injection?
Organic Chemistry 
