The stability of the magnesium carbonate ion pair from 10 degrees to 90 degrees C

Clicks: 1
ID: 298788
1977
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal

Ranked #7,614 of 8,486 articles by views in american journal of science

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 8,486 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
The dissociation constants of the aqueous MgCO/sub 3//sup 0/ ion pair were determined experimentally from 10 to 90/sup 0/C at 15/sup 0/ intervals. Absolute pH measurements in MgCl/sub 2/--KHCO/sub 3/ solutions being titrated with K/sub 2/CO/sub 3/ were used to calculate the results. The experimental pK/sub MgCO/sub 3//sup 0// (-log K/sub dissociation/) at 25/sup 0/C is 2.98 +- 0.03, and the pK values rise smoothly, as a function of temperature, to a value of 3.41 +- 0.067 at 90/sup 0/C. The temperature variation is in excellent agreement with that predicted by electrostatic ion pair theory. The derived values of ..delta..G/sub R//sup 0/, ..delta..H/sub R//sup 0/, and ..delta..S/sub R//sup 0/ of dissociation at 25/sup 0/C are 17050 +- 125 J mol/sup -1/ (4075 +- 30 cal mol/sup -1/, -8439 J mol/sup -1/ (-2017 cal mol/sup -1/), and -85.48 J deg/sup -1/ mol/sup -1/ (-20.43 cal deg/sup -1/ mol/sup -1/), respectively.
Reference Key
openalex_W1565529640 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors R. M. Siebert, P. B. Hostetler
Journal american journal of science
Year 1977
DOI
10.2475/ajs.277.6.716
URL
https://ajs.scholasticahq.com/article/59926.pdf
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.