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ERIC Number: EJ1033516
Record Type: Journal
Publication Date: 2014-Jun
Pages: 2
Abstractor: ERIC
Reference Count: N/A
ISSN: ISSN-0036-6811
Science Notes: Dilution of a Weak Acid
Talbot, Christopher; Wai, Chooi Khee
School Science Review, v95 n353 p10-11 Jun 2014
This "Science note" arose out of practical work involving the dilution of ethanoic acid, the measurement of the pH of the diluted solutions and calculation of the acid dissociation constant, K[subscript a], for each diluted solution. The students expected the calculated values of K[subscript a] to be constant but they found that the calculated K[subscript a] decreased with dilution. In this "Science note," the authors aim to provide the necessary theory to explain these observations.
Association for Science Education. College Lane Hatfield, Herts, AL10 9AA, UK. Tel: +44-1-707-283000; Fax: +44-1-707-266532; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A