What is CO2 measured in in soda?

Answer 1

CO2 can be measured in several different ways. It can be measured as a partial pressure of total gas (i.e. it's contributory percentage of total air pressure) usually in millimeters of Mercury (mm Hg). This measure would be used more by medical sciences in a blood gas analysis. It can be measured in parts per million (how may parts of a million representative air sample that are CO2 particles). This measurement would be widely used in environmental sciences. It is typically measured by weight if it is frozen for commercial and industrial situations.

Answer 2

Infrared absorption.

Scientists use a machine called a CO2 Analyzer, which measures the amount of infrared radiation going into one end of a cell full of dry air, and compares it with the amount coming out the other side. As carbon dioxide absorbs infrared radiation they are able to tell the amount of CO2 in the sample.

In a school lab you can bubble the air in a basic solution and measure the change in acidity. It is simple and requires less equipment than above.

Carbon dioxide levels are measured in particles of CO2 per 1 million particles of the air. For example, at the beginning of the Industrial Revolution (1700), levels were about 280 ppm (parts per million) or 0.028%. In 2013 levels reached 400 ppm (parts per million) or 0.04%.

Answer 3

There are multiple measures that can quantify and describe a gas. These include volume (V), temperature (T), pressure (P). In SI units V is in liters, T in degrees Kelvin, and P in Pascals.

Answer 4

It is normally measured with a carbon monoxide detector meter, concentration given in parts per million

Answer 5

Examples: percentage of volume (for a gas), microgram/L or micromole/L for liquids etc.

Answer 6

weight or volume

Answer 7

Parts per million (ppm)