how pH of the compound can be detected
Answers
Answer:
pH above 7 confirms the compound to be alkaline in nature so it can be either sodium carbonate or sodium hydroxide as HCl and CH
3
COOH are acidic in nature. Sodium hydroxide is a strong base and it dissociates 100% so it has highest pH about 14 while sodium carbonate is a weak base so it can have pH9.
pH of the compound is detected by the pH value or pH scale
Explanation
A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually.
Hence, a pH indicator is a chemical detector for hydronium ions (H3O+) or hydrogen ions (H+) in the Arrhenius model.
Normally, the indicator causes the color of the solution to change depending on the pH.
Indicators can also show change in other physical properties; for example, olfactory indicators show change in their odor.
The pH value of a neutral solution is 7.0 at 25°C (standard laboratory conditions).
Solutions with a pH value below 7.0 are considered acidic and solutions with pH value above 7.0 are basic (alkaline).
As most naturally occurring organic compounds are weak protolytes, carboxylic acids and amines, pH indicators find many applications in biology and analytical chemistry.
Moreover, pH indicators form one of the three main types of indicator compounds used in chemical analysis. For the quantitative analysis of metal cations, the use of complexometric indicators is preferred,
whereas the third compound class, the redox indicators, are used in titrations involving a redox reaction as the basis of the analysis.
CAUSES:
Acids have a few different definitions, but overall they are substances that can generate hydrogen ions when in a solution. pH is a way of showing how many hydrogen ions they release without having to count up all the ions. ... These are formed when a compound can release hydrogen ions, but only very weakly.