* pH paper provides a range: pH paper is designed to show a general range of acidity or alkalinity. It changes color depending on the pH, but it doesn't have specific numbers for each shade.
* Subtle color differences: The color changes on pH paper can be subtle and difficult to interpret accurately without a color chart.
* Limited accuracy: pH paper offers a rough estimate of acidity/alkalinity. It's not a precise tool like a pH meter.
Here's what you can do with pH paper:
1. Determine if a solution is acidic, neutral, or basic: The color of the paper will indicate whether the solution is acidic (red/orange), neutral (green), or basic (blue/purple).
2. Get an approximate pH range: You can compare the color of the paper to a color chart provided with the paper to get a general pH range.
To get a more precise pH measurement, use a pH meter.