Microwaving an unopened can of soda can be extremely dangerous and should be avoided. Heating a sealed can in the microwave can cause a buildup of pressure inside the can, leading to a potential explosion. This is primarily due to the following reasons:
Pressure buildup: When a can of soda is sealed, it contains carbon dioxide gas, which is responsible for the carbonation. When heated, the liquid and gas inside the can begin to expand. Since the can is sealed, the expanding gas has no way to escape, leading to a significant increase in pressure.
Risk of explosion: The increased pressure from heating the can can cause it to rupture or explode, potentially causing harm to anyone nearby and creating a mess. The explosion can release hot liquid and sharp metal fragments, posing a risk of burns and injuries.
Damage to the microwave: If a sealed can explodes inside the microwave, it can damage the appliance and potentially render it unsafe for further use.
To avoid any accidents or damage, it's crucial to never microwave an unopened can of soda or any other sealed container. If you want to warm a beverage, it's best to transfer it to a microwave-safe container before heating it.