Which of the following values of ph will change blue litmus paper red
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The simplest way to establish the pH of a substance – to figure out whether it is acidic or alkaline – is to use red and blue litmus papers. Red litmus paper reacts to alkaline substances by turning blue, while blue litmus paper reacts to acidic substances by turning red.
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ph level less than 7 are acid<blue to red> and at 7 it is neutral and also more than 7 it is basic<red to blur> in nature.
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