concentration en H30+

English translation: H30+ concentration (subscript 3 superscript +)

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:concentration en H30+
English translation:H30+ concentration (subscript 3 superscript +)
Entered by: RosiJillett

19:25 Apr 22, 2019
French to English translations [PRO]
Science - Chemistry; Chem Sci/Eng
French term or phrase: concentration en H30+
The following is from a film I'm translating and I'm not a scientist. With a lot of web research I have produced the English translation, but would be hugely grateful for verification of the term 'concentration en H3O+' as well as verification of the rest of the translation if possible. A teacher is talking to the class. The feature film has scientific content and it's very important that this is correct.
Many thanks in advance.

Comme tout-à-l’heure, pour avoir le pKa, on va faire - log (logarithme décimal) de Ka, d’accord ? Comme le pH:
pH - log de concentration en H3O+, là pKa = - log de la constante d’acidité.

As before, to get the pKa, take the minus log, the decimal logarithm, of Ka, all right?
Similar to pH, pH minus log of H3O+ concentration, pKa is the minus log of the acid dissociation constant.
RosiJillett
United Kingdom
Local time: 11:17
H30+ concentration (subscript 3 superscript +)
Explanation:
As before, to get the pKa, take the negative log of Ka, the base 10 log, all right?
It's like pH. The pH is the negative log of the H3O+ concentration. The pKa is the negative log of the acid dissociation constant.

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Note added at 16 hrs (2019-04-23 11:36:25 GMT)
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I wrote it as I would use it in speech. I think Tony was saying use the articles like Karen did.
Selected response from:

Karen Tkaczyk
United States
Local time: 05:17
Grading comment
4 KudoZ points were awarded for this answer



Summary of answers provided
5 +2H30+ concentration (subscript 3 superscript +)
Karen Tkaczyk
5H3O+ concentration
Nicolas Gambardella


  

Answers


41 mins   confidence: Answerer confidence 5/5
H3O+ concentration


Explanation:
This is correct, but why not keeping the equations, as in the original?

As before, to get the pKa, take - log (decimal logarithm) of Ka, all right?
Similar to pH, pH - log of H3O+ concentration, here pKa = - log of the acid dissociation constant.

Nicolas Gambardella
United Kingdom
Local time: 11:17
Works in field
Native speaker of: Native in FrenchFrench
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43 mins   confidence: Answerer confidence 5/5 peer agreement (net): +2
H30+ concentration (subscript 3 superscript +)


Explanation:
As before, to get the pKa, take the negative log of Ka, the base 10 log, all right?
It's like pH. The pH is the negative log of the H3O+ concentration. The pKa is the negative log of the acid dissociation constant.

--------------------------------------------------
Note added at 16 hrs (2019-04-23 11:36:25 GMT)
--------------------------------------------------

I wrote it as I would use it in speech. I think Tony was saying use the articles like Karen did.


    https://www.thoughtco.com/ph-pka-ka-pkb-and-kb-explained-4027791
Karen Tkaczyk
United States
Local time: 05:17
Specializes in field
Native speaker of: English
PRO pts in category: 326
Notes to answerer
Asker: Many thanks. So in Karen Tkaczyk's answer is the use of the definite article correct throughout? Would be HUGELY grateful for quick confirmation.

Asker: Karen, thank you so very much. Hugely helpful. I'm so sorry, I rarely use Prz.com (but may more now!) and seem to have hit wrong button so can no longer award point. So sorry, but thank you!


Peer comments on this answer (and responses from the answerer)
agree  Tony M: Yes, 'negative' and 'base 10' is correct terminology here, and do be acreful over the placement or absence of 'the'.
15 mins
  -> Thank you.

agree  rokotas: however please correct the "O" (letter O) instead of "0" (zero)
19 hrs
  -> Oh, yes, indeed.
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