As a reaction proceeds the concentration of the reactants will get lower. Since reactions occur due to collisions that are in the correct orientation and lower concentrations leads to a lower amount of collisions, lower concentrations result in lower reaction rates. I hope this helps. Let me know if anything is unclear.
The smallest volume is 30 cm^3.
It says on google
<span>An acid-base indicator (e.g., phenolphthalein) changes color depending on the pH. Redox indicators are also frequently used. A drop of indicator solution is added to the titration at the start; when the color changes the endpoint has been reached, this is an approximation of the equivalence point.</span>
- <span>Graduated cylinders are used to measure volume.
- </span><span>Always read a graduated cylinder from the bottom of the meniscus.</span>
We could not use recycled water for drinking purposes. That is because it may cause us to get sick.