Which soft drink goes flat the fastest?

It's hard to say definitively which soft drink goes flat the fastest because there are a lot of factors that can affect how quickly a soda loses its fizz:

* Carbonation Level: Drinks with higher initial carbonation levels will obviously lose their fizz faster.

* Temperature: Warmer drinks lose carbonation faster than cold drinks.

* Container: Open containers allow gas to escape more easily, so drinks in cans or bottles will go flat faster than those in sealed containers.

* Exposure to Air: Leaving a soda open for extended periods will cause it to lose its fizz rapidly.

* Type of Soda: Some sodas may have different levels of carbonation or ingredients that affect how quickly they go flat.

However, in general, sodas with a higher sugar content tend to lose their fizz faster than those with lower sugar content. This is because sugar can bind to the carbon dioxide molecules, making them more likely to escape from the solution.

It's important to note that all sodas will go flat eventually, regardless of these factors.