Interpretation:
The functioning of the methods carbon filtration, water softening and reverse osmosis used for home treatment is to be explained, and the impurities they remove are to be determined.
Concept Introduction:
Water is a common liquid that is present on the Earth.
It is also known as universal solvent. It can dissolve a wide range of organic and inorganic solutes.
Water is vital for the existence of all living animals. Without water, no life form can exist, it constitutes an important part of rivers, lakes, streams, clouds, snow and ice.
Water is truly an unusual molecule such that being a low molar mass compound, it exists as a liquid at room temperature and has an anonymously high boiling point.
Ice floats on water because it has a lower density than water.
Water contains some unwanted particles which can lead to diseases and other hostile effects on human health.
Numerous particles and microbes, such as bacteria can contaminate the water.
Biological contaminants: Some microbes can live in water and can cause various diseases like cholera, dysentery, and so on. Two examples of such microbes are Giardia and Legionella.
Inorganic contaminants: Some inorganic molecules can dissolve in water and make it impotable (not suited for drinking). Two examples of such molecules are Nitrates and Asbestos.
Organic contaminants: Some organic molecules can dissolve in water and makes it impotable (not suited for drinking). Two examples of such molecules are chlorohydrocarbons (volatile) and ethylbenzene (non-volatile).
Radioactive contaminants: Some radioactive elements can dissolve in water and make it impotable (not suited for drinking). Two examples of such elements are Uranium and Radium.
Contaminants that pose immediate health risks are the biological contaminants and inorganic contaminants because they get immediately dissolved in blood and starts reacting with it.
Contaminants that can be eliminated by boiling are the biological contaminants because the microbes can be killed by increasing the temperature.
Drinking water is made safe by using some techniques such as filtration, sedimentation and so on.
Drinking water is also made safer at homes by using carbon filtration, water softening and reverse osmosis.
Ground water contains salts of magnesium and calcium, and is also known as hard water.
Hard water prevents the action of soap and cannot be used for cleansing actions.
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Chapter 12 Solutions
Bundle: Chemistry In Focus: A Molecular View Of Our World, 7th + Owlv2 With Mindtap Reader, 1 Term (6 Months) Printed Access Card
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- Draw the a-anomer cyclized pyranose Haworth projection of the below hexose. Circle the anomeric carbons. Number the carbons on the Fischer and Haworth projections. Assign R and S for each chiral center. HO CHO -H HO -H H- -OH H -OH CH₂OH Draw the ẞ-anomer cyclized furanose Haworth projection for the below hexose. Circle the anomeric carbons. Number the carbons on the Fischer and Haworth projections. HO CHO -H H -OH HO -H H -OH CH₂OHarrow_forwardName the below disaccharide. Circle any hemiacetals. Identify the numbering of glycosidic linkage, and identify it as a or ẞ. OH HO HO OH HO HO HO OHarrow_forwardWhat are the monomers used to make the following polymers? F. а. b. с. d. Вецер хочому なarrow_forward
- 1. Propose a reasonable mechanism for the following transformation. I'm looking for curved mechanistic arrows and appropriate formal charges on intermediates. OMe MeO OMe Me2N NMe2 OTBS OH xylenes OMe 'OTBSarrow_forwardWhat is the polymer made from the following monomers? What type of polymerization is used for each? а. ОН H2N но b. ن -NH2 d. H₂N NH2 довarrow_forwardCondensation polymers are produced when monomers containing two different functional groups link together with the loss of a small molecule such as H2O. The difunctional monomer H2N(CH2)6COOH forms a condensation polymer. Draw the carbon-skeleton structure of the dimer that forms from this monomer.arrow_forward
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