How pH Level Affects Corrosion Rate

The purpose of the project was to examine how pH affects corrosion rate. If pH affects corrosion rate, it is assumed that the lower the pH, the faster the corrosion rate. This occurs because liquids with a pH below 7 have stronger acidity characteristics. The effect of pH level on corrosion rate was determined by depositing copper pennies on each of three plastic cups and then three different liquids were distributed to each cup by their pH level for observation. Chemical reaction

Different pH levels may affect plant growth and development. Some keywords include: pH, germination, acidity, penetration and diffusion. This experiment examined the influence of vinegar of different pH values ​​on the growth of leguminous plants. Materials used in this experiment included water (pH 6), pH 3, 4 and 5 vinegar (each prepared before the experiment), beans, soil and pots. Eight legume plants were planted, two were watered at pH 6, the other watered with vinegar of pH 5, pH 4 and pH 3. The results showed that after the pH value decreased the soybean meal began to die, the pH 4 beans grew slowly and the pH 5 beans grew fairly normal speed and the pH value 6 increased the fastest . Generally, the more acidic the environment is, the more difficult the plant will survive.

The pH of water may affect the degree of corrosion of metals and it is important to judge the corrosivity of water as it may indirectly affect health by absorption of metal from the water pipe is. In order to minimize corrosion of the water pipes, it is necessary to maintain the pH of the water. If this is not achieved, it leads to water pollution, which adversely affects its taste, smell and appearance. Generally, the lower the pH, the higher the degree of corrosion.

Corrosion of low pressure boilers can be caused by dissolved oxygen, acidity and excess alkalinity. Therefore, water treatment should remove dissolved oxygen and maintain proper pH and alkalinity of boiler water. Without effective water treatment, the cooling water system forms scale, corrosion, scale, possibly becoming a breeding ground for harmful bacteria. This reduces efficiency, shortens plant life and makes operations unreliable and dangerous. Ultrapure water is required in several industries such as wafer manufacturing, space technology, and many high-quality metallurgical processes. This water production usually involves many stages and can include several distillation steps using reverse osmosis, ion exchange and solid tin equipment.