What is the main reason that the world Cannot obtain most of its fresh water by desalinating seawater?

The problem is that the desalination of water requires a lot of energy. Salt dissolves very easily in water, forming strong chemical bonds, and those bonds are difficult to break. Energy and the technology to desalinate water are both expensive, and this means that desalinating water can be pretty costly.

Why does water which evaporates from the ocean not result in saltwater rain?

As the ocean water evaporates into water vapor, a gas, the salt itself is left behind in the ocean. Thus, all that remains is the pure water vapor which eventually condenses back into a cloud droplet. Any rain that might fall from that would also be salt-free water.

Why can’t we use salt water as drinking water?

Why can’t people drink sea water? Seawater is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body’s kidneys normally remove excess salt by producing urine, but the body needs freshwater to dilute the salt in your body for the kidneys to work properly.

How does salt water evaporate into freshwater?

It’s an ongoing process known as the hydrologic cycle. Salt in seawater is merely dissolved in the water, not chemically bonded to it. When airborne droplets of salty ocean spray evaporate, their minute loads of salt are left floating in the air. So, the answer to your question is simple: Only pure water evaporates.

Can you filter ocean water to drink?

Reverse osmosis and distillation are the most common ways to desalinate water. Reverse osmosis water treatment pushes water through small filters leaving salt behind.

Is rain saltwater or freshwater?

Rain replenishes freshwater in rivers and streams, so they don’t taste salty. However, the water in the ocean collects all of the salt and minerals from all of the rivers that flow into it.

What happen to salt solution after the water evaporated?

As the water evaporates, the salt doesn’t leave with it! Therefore, the concentration of salt in the water left behind increases. Eventually, the concentration gets so high that the water becomes supersaturated, and the salt will begin to recrystallize into a solid.

Why does Sea water evaporate?

During the day, the sun heats up the air and ocean surface, causing water molecules to evaporate. Evaporation occurs when a liquid molecule of water escapes into the air as a gas. Over the ocean, evaporation appears to remain constant, both day and night. Water in the air in gas form is known as water vapor.

How does salt water from the ocean changes to freshwater?

Eventually, all the dissolved minerals get dumped into the ocean. Meanwhile water on the ocean’s surface evaporates into the air, ditching all those salts and minerals. It then falls back on land as fresh water, replenishes the lakes and rivers, and the cycle continues.

Why can’t we just desalinate ocean water?

It is exorbitantly expensive, requires large amounts of energy, it is environmentally damaging plus it is only really viable for coastal communities. To put it simply, desalination removes salt and other minerals from water. Seawater desalination is one of the most expensive sources of fresh water.