What chemicals make soft drinks acidic?

Answer 1

What makes fizzy drinks fizzy is the carbon dioxide, or CO2 in them. When CO2 is dissolved in water, it doesn't stay as CO2. Instead, it forms carbonic acid, H2CO3.

CO2 + H2O --> H2CO3

It is the carbonic acid that is acidic.

Answer 2

Carbonic acid in soft drinks comes from carbon dioxide dissolving in water, creating carbonic acid. Citric acid and phosphoric acid are also common additives in soft drinks to enhance flavor and provide acidity.

Answer 3

leave it out for a while, or pour it in a glass and put your finger in the glass ANSWER: The "fizz" in fizzy drinks is CO2, it is put in the drinks under pressure, leaving the "fizzy" liquid open to atmospheric pressure allows the CO2 to escape, making it lose its "fizz"

Answer 4

Fizzy drinks may contain a number of acids.

In Pepsi and Coca Cola we commonly find Phosphoric Acid.

Other beverages may contain Citric Acid.

The fizzy bubbles is due to a gas known as Carbon Dioxide.

Carbonic Acid is also a name sometimes given to solutions of carbon dioxide in water, which contain small amounts of H2CO3

Answer 5

They contain carbonic acid, which has the formula H2CO3, sometimes written OC(OH)2 to show that it is diprotic.

Carbon dioxide dissolves in water and some but by no means all is converted to carbonic acid. There is an equilibrium:-

H2CO3 <--> CO2 + H2O

Higher pressure pushes the equilibrium to the left. Higher pressure also increases the solubility of CO2. When you open a soda can, two things happen carbon dioxide in solution degases; the equilibrium moves to the right and some CO2 is evolved. The "fizz" you see is the escaping carbon dioxide gas. Fortunately for the flavour buds, some carbonic acid remains in the drink.

Answer 6

Because they are carbonated. The "fizz" that you see and hear when you open a carbonated beverage support as coca cola is compressed air or carbon expanding as it exhausts from the air tight bottle. Much like air in your car tire or gasoline in your fuel tank, it expands when heated and contracts when cooled

Answer 7

Phosphoric acid is most common in colas and other soft drinks. Citric acid is common in fruity drinks. The carbon dioxide dissolved in the drinks (for the fizz) also forms Carbonic acid. Malic acid, Tartaric acid and others may also be present.

Answer 8

Fizzy Drinks contain an acid called Carbonic Acid, this is what gives them their fizzyness!

Answer 9

Malic acid is commonly found in fizzy drinks.

Answer 10

In almost all soft drinks phosphoric acid is what makes the drink acidic