The measure of a major arc is C10-448A-888484be x Â° $%# greater than 180, and equal to 360 minus the measure of the minor arc with the same endpoints. m âADB = 360 - mAB â = 360 - x A semicircle is an arc with endpoints that lie on a diameter.
Process Chemicals Corrosion. Chlorine. The flow rate of liquid chlorine through carbon steel pipework is restricted to 2 m/s to avoid removing the ferric chloride coating on the pipe surface which protects against erosion / corrosion of the carbon steel. Wet chlorine gas corrodes mild steel.
Adding chlorine at a dosage of 0.2 mg/L as Cl2 to. drinking water will increase the corrosion of copper and iron in the system but may not adversely. affect lead. In general, elevating the pH of the water to between 7.0 and 7.8 is beneficial in. counteracting the corrosive effect of chlorinated water.