SC-1107
pH scale
Lower Sec Science · Secondary 2 · Medium · pH scale
A student adds a few drops of universal indicator to four solutions. One solution turns the indicator dark blue. What can be concluded about this solution?
- It is a strong acid with pH 2.
- It is a weak acid with pH 6.
- It is neutral with pH 7.
- It is a strong alkali with pH 13.
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