CH-11
pH scale
Chemistry · Secondary 3 · Easy · pH scale
A solution turns methyl orange yellow and phenolphthalein colourless. According to the pH scale, which range best represents the pH of this solution?
- 3.0 to 4.5
- 4.5 to 6.0
- 6.0 to 7.5
- 9.0 to 11.0
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