CBSE Class 11-science Answered
what is the difference between heavy water and hard water ?
Asked by | 23 Dec, 2012, 09:21: PM
Expert Answer
Hard water:Hard water is a type of water that has high mineral content (in contrast with soft water). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and sulfates. Calcium usually enters the water as either calcium carbonate (CaCO3), in the form of limestone and chalk, or calcium sulfate (CaSO4), in the form of other mineral deposits. The predominant source of magnesium is dolomite (CaMg(CO3)2). Hard water is generally not harmful.
Heavy water:Heavy water is water which contains a higher proportion than normal of the isotope deuterium, as deuterium oxide, D2O or ²H2O, or as deuterium protium oxide, HDO or ¹H²HO. Its physical and chemical properties are somewhat similar to those of water, H2O. Heavy water may contain as much as 100% D2O, and usually the term refers to water which is highly enriched in deuterium. The isotopic substitution with deuterium alters the bond energy of the hydrogen-oxygen bond in water, altering the physical, chemical, and especially biological properties of the pure or highly-enriched substance to a larger degree than is found in most isotope-substituted chemical compounds.
Heavy water:Heavy water is water which contains a higher proportion than normal of the isotope deuterium, as deuterium oxide, D2O or ²H2O, or as deuterium protium oxide, HDO or ¹H²HO. Its physical and chemical properties are somewhat similar to those of water, H2O. Heavy water may contain as much as 100% D2O, and usually the term refers to water which is highly enriched in deuterium. The isotopic substitution with deuterium alters the bond energy of the hydrogen-oxygen bond in water, altering the physical, chemical, and especially biological properties of the pure or highly-enriched substance to a larger degree than is found in most isotope-substituted chemical compounds.
Answered by | 24 Dec, 2012, 10:56: AM
Application Videos
-
Introduction to Water
This video explains about presence of water on earth and its physical prope... -
Chemical Properties of Water
This video explains about various chemical propertries of water by using ch... -
Hard and soft water ...
This video gives a brief idea about hardness of water and definition of Har...
Concept Videos
-
Hydrogen
This video explains the position of hydrogen in the periodic table and isot... -
Hydrogen
This video explains the occurrence, preparation, properties, uses of dihydr... -
Hydrogen
This video contains practice questions on hydrogen and hydrides. -
Temporary hardness
This video explains about cause of temporary hardness of water and...
-
Permanent hardness
This video explains cause of permanent hardness of water and methods to ...
CBSE 11-science - Chemistry
Asked by mayuresh.sudrik | 25 Sep, 2023, 12:21: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by acshanadhana15 | 16 Sep, 2020, 11:17: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by shehnaz06par | 05 May, 2020, 01:16: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by sagarvinay352 | 01 May, 2020, 08:27: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by harshilmodi74.tl | 16 Apr, 2020, 11:20: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by veeravallisrinu2 | 13 Apr, 2020, 09:20: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by ombhattarai693 | 27 Feb, 2020, 08:44: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by jain.pradeep | 26 Feb, 2020, 10:00: AM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by vatsal012345 | 09 Dec, 2019, 11:09: PM
ANSWERED BY EXPERTCBSE 11-science - Chemistry
Asked by Shiprapandey2906 | 25 Jun, 2019, 05:24: PM
ANSWERED BY EXPERT
