Question
Download Solution PDFWhich of the following solution has the lowest pH value?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 'Tomato juice'.
Key Points
- pH-value defines the acidity or basicity of the substance. More the acidic substance lower is the acidic value.
- pH-value helps us to know whether the substance is acidic or basic.
- Its value ranges from 0-14.
- 0-6.9 is considered as an acidic substance, 7 is considered as neutral and 7.1 to 14 is considered as basic.
- Tomato: Tomato contains two types of acids, these are malic acid and citric acid. Both of them are mild acids. Hence the pH-value of tomato ranges from 3.5-4.7.
Additional Information
- The pH of saliva before the meal is about 7.4 which is basic. The pH of saliva after the meal is around 5 .
- Coffee does indeed have a pH level, but is not a useful measure of flavor. It would vary depending on brewing method and roast level, but not significantly. Black coffee generally lands around a pH of 5 (acidic, not basic) and milk has a pH of 6 (slightly more neutral).
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