Carbon dioxide, escape

The "fizz" is caused by the gaseous product, carbon dioxide, escaping from the solution. 

Acidulants. The other component of any system of chemical leavening based on sodium hydrogen carbonate is an acid. The original acidulants were sour milk (lactic acid), vinegar (acetic acid), lemon juice (citric acid) and cream of tartar (potassium acid tartrate). All of these will react immediately on mixing so that the carbon dioxide is released straight away. The product had to be baked before the carbon dioxide escaped from the batter or product. The only delay possible was that allowed by the batter viscosity. 

It is often difficult to define precisely the elemental flux from a system to another as a product of a mass flux of a carrier multiplied by a concentration in this carrier. For instance, the flux of carbon from the biosphere to the atmosphere is not adequately represented by a carrier flux since carbon dioxide escapes directly to the air. We therefore have to resort to a direct formulation in terms of total quantities (amounts, e.g., in tons, kilograms or moles) and fluxes. Denoting Mt the total quantity of the species under consideration in the reservoir i and the flux of the same species from reservoir i to reservoir j, we note that... 

The autoclave is then allowed to cool to room temperature. The screw cup is loosened carefully until carbon dioxide escapes. 

Open a can of cool soda water. (Listen for the sound of excess carbon dioxide escaping.) Pour about 50 mL into each of two 100 mL beakers. Note the rate at which bubbles form. Record your observations. 

The carbon dioxide escapes from the steel-making furnace as a gas. The silicon dioxide (SiOi) forms slag. Slag is a crusty, metallic material that is scraped off after the steel is produced. Other impurities removed by a blast of oxygen are sulfur, phosphorus, manganese, and other metals. 

Q When the cap on the soda bottle is closed, pressure above the solution keeps excess carbon dioxide (CO2) from escaping the solution. o When the cap is removed, the decreased pressure above the solution results in the decreased solubility of the carbon dioxide— the carbon dioxide escapes the solution. 

Explain each of the following statements (a) The boiling point of seawater is higher than that of pure water, (b) Carbon dioxide escapes from the solution when the cap is removed from a carbonated soft-drink bottle, (c) Molal concentrations and molar... 

As carbon dioxide escapes the solution, the pressure in the closed bottle increases. 

Explain Why does the carbon dioxide escape from the soiution when the cap is removed ... 

Experiment 7.3 Acidity effect of mineral water. If the indicator bromocresoi green is put into a bottle of very cold mineral water, the solution turns yellow. When the bottle is opened at room temperature or the content heated, a large portion of the carbon dioxide escapes and the indicator color changes to green and finally to an intense blue. 

High atmoepheric concentrations, e.g. in poorly ventilated spaces, can cause oxygen deficiency, with risk of unconsciousiiess. At atmospheric concentrations above 10% causes unconsciousness and death given off in many fermentation processes (wine etc.) and is a major component of flue gas. Turn leaking cylinder so that ieak is on top to prevent liquid carbon dioxide escaping. 

Explain each of the following statements (a) The boiling point of seawater is higher than that of pure water, (b) Carbon dioxide escapes from the solution when the cap is removed from a carbonated soft-drink bottle, (c) Molal and molar concentrations of dilute aqueous solutions are approximately equal, (d) In discussing the colligative properties of a solution (other than osmotic pressure), it is preferable to express the concentration in units of molality rather than in molarity, (e) Methanol (b.p. 65°C) is useful as an antifreeze, but it should be removed from the car radiator during the summa- season. 

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