Is carbon dioxid an acid? does it have acidic properties in any of it's states?
Answer:
Yes, it is an acid (despite its lack of hydrogen). It will behave like an acid whether it is a gas, liquid or solid. You can choose your definition of acid:
1) It increases the concentration of hydronium [H3O+] ions when dissolved in water, and the resulting solution will turn blue litmus paper to red.
2) It is a Lewis acid, in that it accepts electrons in a reaction. For example, the binding of CO2 to the iron in hemoglobin (which carries CO2 through the blood to the lungs and is one reason we don't have super-acidic blood)
I've no experience with liquid CO2 (it's used as an industrial solvent, for example, to make decaffeinated coffee), but when we shovel out dry ice (solid CO2) for laboratory use, we use plastic or stainless steel scoops. Ordinary metal scoops (iron, or aluminum) will corrode on contact. I'm told it could be a violent reaction, but I never dare try to see for myself.
It forms carbonic acid when dissolved in water.
Carbon Dioxide (CO2) is a gas. When mixed in water, it forms Carbonic Acid, which is a weak acid.
Carbon dioxide is not an acid but it forms an acidic solution when dissolved in water.
CO2(g) + H2O >>> H2CO3 (aq)
carbon water carbonic acid
dioxide
It forms Carbonic Acid when mixed with water.
carbon dioxide(CO2) is not acidic because it contains no hydrogen. If it reacts with any compound that contains an hydrogen such as water(H2O), then it will be classified as acidic.
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