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* https://ellieirons.com/projects/two-meadows/ | * https://ellieirons.com/projects/two-meadows/ | ||
I use red cabbage to make pH indicator. The pH solution from 2 to 13. | [I use red cabbage to make pH indicator. The pH solution from 2 to 13.] | ||
1. pH=2 100ml distilled water + 1ml HCL | 1. pH=2 100ml distilled water + 1ml HCL | ||
2. pH=4 100ml distilled water + 0.1g apple acid | 2. pH=4 100ml distilled water + 0.1g apple acid | ||