Instructions: Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
Input: peroxide in a freezer reserved for laboratory chemicals only. Manganese dioxide is a strong oxidant, avoid contact with organic material. Inhalation can lead to increased incidence of respiratory infection and effects on the central nervous system. It is assumed to be harmful if swallowed. Avoid dust. Wash hands well after handling. How much oxygen gas in grams can be prepared from 58.8g of potassium chlorate? Pure oxygen gas can be prepared in the laboratory by the decomposition of solid potassium chlorate to form solid potassium chloride and oxygen gas. How much oxygen gas in grams can be prepared from 58.8g of potassium chlorate? Give a clear explanation of your answer to get chosen as best. Follow. Oxygen in a gas jar will rekindle a glowing splint Name 3 physical properties of Oxygen Colourless Odourless and Tasteless, Slightly soluble in water, Slightly heavier than air gas, with a density greater than that of air, and a very low solubility in water. properties greatly facilitate the collection of oxygen in this lab. combustion. In this lab, oxygen will be generated as a product of the decomposition of hydrogen peroxide. A catalyst is used to speed up the rate of the decomposition reaction, which would otherwise be too slow to use as We don't won't to put the stopper on the flask just yet. There is about 25 mL of air (80% nitrogen & 20% oxygen) in the flask. The bubbles of oxygen that are forming will displace the air by pushing it out of the flask. Oxygen is a little more dense than air, so oxygen will stay closer to the surface of the water and push the air out of the flask. Wait about 2 minutes before placing the stopper onto the flask. That will give the newly created oxygen to push the most of the air out of the flask. (Iron, for instance, would oxidize, and thus decrease the amount of oxygen given off.) The theoretical maximum efficiency (electricity used vs. energetic value of hydrogen produced) is between 8094%. 2H2O(aq)-- 2H2(g) + O2(g) Prepared in the laboratory by: methane. CH 4. Heating a compound called sodium ethanoate with another compound soda-lime (sodium hydroxide). The methane gas is collected over water. oxygen. O 2. Adding hydrogen peroxide solution to manganese IV oxide powder. The oxygen gas is collected over water. carbon dioxide. CO 2 How do we prepare oxygen in the lab? By decomposing hydrogen peroxide using manganese dioxide as a catalyst What is the word equation for the laboratory preparation of Oxygen? With the help of a diagram explain how oxygen gas is prepared in the laboratory. Set up the apparatus as shown. Add 10 volume hydrogen peroxide slowly via the funnel. Oxygen will pass through the delivery tube. Oxygen is collected by downward displacement of water in the gas jar. With the help of a diagram explain how hydrogen gas is prepared in the laboratory. Set up the apparatus as shown. Add dilute sulphuric or hydrochloric acid slowly via the funnel. Preparation of Gases in Laboratory Aims: To prepare oxygen, hydrogen and carbon dioxide gas in laboratory. Problems : 1. How to prepare oxygen gas in laboratory? 2. How to prepare carbon dioxide gas in laboratory? 3. How to prepare hydrogen gas in laboratory? Hypothesis: 1. Oxygen gas can be prepared in laboratory by using manganese dioxide (MnO2) and hydrogen peroxide (H2O2). 2. Carbon dioxide gas can be prepared in laboratory by using marble chips (CaCO3) and dilute hydrochloric acid (HCl). 3. Hydrogen gas can be prepared in laboratory by using zinc metal and diluted hydrochloric acid (HCl). Variables: Query: how is oxygen prepared in the laboratory?
Output:
Pure oxygen gas can be prepared in the laboratory by the decomposition of solid potassium chlorate to form solid potassium chloride and oxygen gas.