Kidtyr7798 Kidtyr7798

09-06-2022
Physics

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Sharna mixed cabbage water with colourless washing up liquid the mixture turned blue what does this tell u about the washing up liquid

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sp10925 sp10925

16-06-2022

The washing up liquid turns blue because pH of liquid is greater than 7.

What is pH?

pH is a measures how much water is acidic/basic in nature. The range o pH is 0 - 14. The pH value of 7 represents neutral. pH less than 7 is acidic nature. pH greater than 7 shows a base.

Sharna mixed cabbage water with colourless washing up liquid, the mixture turned blue.

Cabbage contains anthocyanin which changes color when it is mixed with an acid or a base. The pigment turns bluish-green in a pH greater than 7.

Thus, The washing up liquid turns blue because pH of liquid is greater than 7.

Learn more about pH.

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