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- Bicarbonate_indicator abstract "A bicarbonate indicator (hydrogencarbonate indicator) is a type of pH indicator that is sensitive enough to show a color change as the concentration of carbon dioxide gas in an aqueous solution increases. The indicator is used in photosynthesis and respiration experiments to find out whether carbon dioxide is being liberated. It is also used to test the carbon dioxide content during gaseous exchange of organisms. When the carbon dioxide content is higher than 0.03%, the initial red color changes to yellow as the pH becomes more acidic. If the carbon dioxide content is lower than 0.03%, it changes from red to purple. Carbon dioxide, even in the concentrations found in exhaled air, will dissolve in the indicator to form carbonic acid, a weak acid, which will lower the pH and give the characteristic colour change. A colour change to purple during photosynthesis shows a reduction in the percentage of carbon dioxide and is sometimes inferred as production of oxygen, but is not actually direct evidence for it.Great care must be taken to avoid acidic or alkaline contamination of the apparatus in such experiments, since the test is not directly specific to carbon dioxide.".
- Bicarbonate_indicator wikiPageID "21421469".
- Bicarbonate_indicator wikiPageRevisionID "557781175".
- Bicarbonate_indicator hasPhotoCollection Bicarbonate_indicator.
- Bicarbonate_indicator subject Category:PH_indicators.
- Bicarbonate_indicator type Abstraction100002137.
- Bicarbonate_indicator type Communication100033020.
- Bicarbonate_indicator type Fact106636259.
- Bicarbonate_indicator type Index106639674.
- Bicarbonate_indicator type Information106634376.
- Bicarbonate_indicator type Message106598915.
- Bicarbonate_indicator type PHIndicators.
- Bicarbonate_indicator comment "A bicarbonate indicator (hydrogencarbonate indicator) is a type of pH indicator that is sensitive enough to show a color change as the concentration of carbon dioxide gas in an aqueous solution increases. The indicator is used in photosynthesis and respiration experiments to find out whether carbon dioxide is being liberated. It is also used to test the carbon dioxide content during gaseous exchange of organisms.".
- Bicarbonate_indicator label "Bicarbonate indicator".
- Bicarbonate_indicator label "碳酸氢盐指示剂".
- Bicarbonate_indicator sameAs m.05f5sqh.
- Bicarbonate_indicator sameAs Q4903538.
- Bicarbonate_indicator sameAs Q4903538.
- Bicarbonate_indicator sameAs Bicarbonate_indicator.
- Bicarbonate_indicator wasDerivedFrom Bicarbonate_indicator?oldid=557781175.
- Bicarbonate_indicator isPrimaryTopicOf Bicarbonate_indicator.