1. Limewater.
2. Light a splint and if the gas goes out it is most probably CO2.
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One common test for carbon dioxide is the limewater test. In this test, carbon dioxide is bubbled through limewater, which will turn cloudy in the presence of carbon dioxide due to the formation of calcium carbonate precipitate. This cloudiness indicates the presence of carbon dioxide.
To test the level of carbon dioxide in water, you can use a pH meter or test strip to measure the acidity of the water since carbon dioxide forms carbonic acid when dissolved in water. You can also use a dissolved carbon dioxide test kit that uses chemical reagents to detect and quantify the amount of carbon dioxide present.
A carbon dioxide test is a medical test that measures the levels of carbon dioxide in the blood. It is often used to evaluate the body's acid-base balance and respiratory function. Abnormal levels of carbon dioxide can indicate conditions such as respiratory failure, kidney disease, or metabolic disorders.
The test that assesses the level of oxygen and carbon dioxide in the blood is called an arterial blood gas (ABG) test. It provides information about the acidity (pH) and levels of oxygen and carbon dioxide in the blood.
The term "carbon dioxide gas" or simply "carbon dioxide" could be used to describe the contents of the balloon.
To test for carbon dioxide in a test tube, you can bubble the gas through limewater (calcium hydroxide solution). If the limewater turns cloudy or milky, it indicates the presence of carbon dioxide as it forms a precipitate of calcium carbonate.