This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
a) Oxygen is obtained from air on a large scale through the fractional distillation of liquid air. • Air is first filtered to remove dust particles. • It is then compressed and cooled to remove carbon dioxide and water vapor. • The remaining air is further cooled to a very low temperature (around -200^ C) until it liquefies. • The liquid air is then fed into a fractionating column, where it is slowly warmed. • Nitrogen (boiling point -196^ C) distills off first, followed by argon (boiling point -186^ C). • Liquid oxygen (boiling point -183^ C) is left behind at the bottom of the column. b) To increase the concentration of nitric acid from 60% to about 98%: • The 60% nitric acid is mixed with concentrated sulfuric acid. • The mixture is then distilled. Concentrated sulfuric acid acts as a dehydrating agent, absorbing water from the nitric acid. • This allows the more concentrated nitric acid (up to 98%) to be distilled off. That's 2 down. 3 left today — send the next one.