Is Distilled water the same as De-ionised water?

Answer 1

No they are not the same.

Distilled water is water that has been boiled then condensed to collect the pure water. When the water is boiled the ions and minerals are left behind while the pure water boils and is collected.

Deionized water is water that has been filtered or treated to remove ions. There may be other materials still in the water, but the ions (which may interact with your chemicals) are removed.

When making solutions in chemistry you often can get by with using deionized water - but my classes always use distilled water. You can purchase distillation units of various sizes and prices to fit your needs.

Answer 2

This Site Might Help You.

RE:
Is Distilled water the same as De-ionised water?

Answer 3

No. Deionized water is made by passing water through anion and cation resin beads which strips out all ionic species such as salt (NaCl). Non-ionic compounds are not removed and will remain in solution. Distilled water is condensed steam. Since all compounds have unique boiling points. Only those compounds with boiling points between 68 and 212 F would boil ie volatilize and would be later condensed to make Distilled Water. The salts stay behind in the residue, but many organic compounds could end up in the water distillate.

Answer 4

Its the other way around for me - Mostly we use distilled for everything but usually use deionized with electrochem reactions.

As the others quite rightly say distilled is simply just boiled - which kills bacteria and removes some impurities in the water. It also removes some oxygen (disolved oxygen), this is why it is best not to reboil water when making a cup of tea as it doesnt taste as nice as fresh water.

However water still has a number of metals in its contents probably metals like Al and Cu which are probably in solution (in very tiny amounts) as Al3+ and Cu+ ions plus some others, deionizing the water gets rid of these making the water ideal for electrochemical reactions, so you know the reaction is only down to what you put in the water and is more controlled.

As someone said you can put deionized into lead-acid batteries in a car absolutely! Batteries work by electrochemical reactions and deionized water would be perfect for this.

All those people explaining different methods for deionized water, they all look right to me. Theres always more than one way to skin a cat!

Answer 5

Deionised Water

Answer 6

distilled water and de-ionised water are virtually the same in that they have been purified, however the methods of obtaining them are different.
distilled water is obtained by boiling the water and then re-condensing the water into a clean container, leaving most contaminants behind, whereas deionised water is obtained by using an ion-exchange process, purifying the water from any ions such as copper and iron, and anions such as chloride, and leaving only H3O+ OH−. this process may still leave other non-ionic impurities such as organic compounds

Answer 7

Absolutely not. Distilled water is just condensed steam and contains most of the minerals that were present in the water that made the steam. Deionised water is distlilled first , then passed thru a bed that removes most or all of the metal ions and is very nearly pure H2O. It is not recommended for casual consumption.

Answer 8

Technically yes. Distilled water is water that has been boiled to evaporation then condensed leaving if any salts(ions) behind, leaving pure water. Whereas deionized water is water where all ions of charge have been removed through reverse osmosis and filters.

Answer 9

No, de-ionising is a cheaper process (doesn't require all that boiling to evaporate it), but results in something that is suitable for many of the applications for which you would otherwise use distilled water eg. topping up lead-acid batteries.
See http://en.wikipedia.org/wiki/Deionised_water

Answer 10

The best answer here is from "physandchemteach."

I would just like to add that the quality of water from an ion exchange process (deionizer) decreases as the cation and anion beds become exhausted. It is therefore important to monitor the quality of the water being output. The beds must be regularly regenerated to maintain the required water quality.

In your question you do not specify the application and it is important to note that DI (deionized) water is perfectly suitable for a wide range of applications, including boiler feed and industrial process waters.

For further information on ion exchange:

http://www.veoliawaterst.com/en/files/?file=960