| Keyword | CPC | PCC | Volume | Length string | Score |
|---|---|---|---|---|---|
| phenolphthalein colour in alkali | 1.33 | 0.6 | 7865 | 32 | 53 |
| what colour is phenolphthalein in alkali | 0.24 | 0.6 | 3474 | 40 | 52 |
| what colour does phenolphthalein go in alkali | 0.91 | 1 | 4656 | 45 | 73 |
| phenolphthalein colour change in alkali | 1.27 | 0.7 | 7787 | 39 | 93 |
| phenolphthalein alkaline colour | 1.82 | 0.1 | 940 | 31 | 68 |
| colour of phenolphthalein in alkali | 1.51 | 0.5 | 9780 | 35 | 44 |
