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How could an indicator be used to find out something is acidic or alkaline if the label was missing?
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How could an indicator be used to find out something is acidic or alkaline if the label was missing?

User Recurse
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just measure based on scale pH 0 to pH 14 and observed the colour changes where under 7 is acidic and it turns indicator into red, while 7 above is alkaline which produce dark purple
User Vladislav Ladicky
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