Ammonia is water soluble. Why?

Ammonia is water soluble. Why?
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Ans: It forms hydrogen bond with water. 
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Last Answer : Ans: i) Hydrogen bond is found in H2O but not in H2S.  ii) Hydrogen bond is found in NH3 but not in PH3.  iii) Because they have low ionization energy.

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Last Answer : Ans: Because of lone pair of electrons on N. 

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Last Answer : ANSWER: W -- HELIUM

Which one of the following metals is immune to corrosion by air, water, hydrochloric acid and nitric acid; but is soluble in aqua regia? w) gold x) silver y) magnesium z) nickel

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Description : A nonpolar molecule is usually: w) hydrophilic x) soluble in water y) hydrophytic z) soluble in organic solvents

Last Answer : ANSWER: Z -- SOLUBLE IN ORGANIC SOLVENTS

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Last Answer : ANSWER: Z -- LEAD CHLORIDE 

For which of the following classes of salts are all of its compounds soluble in water? w) sulfates x) nitrates y) hydroxides z) chlorides

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Last Answer : ANSWER: X -- NITRATES

Which of the following is not soluble in water ? (1) Lead Sulphate (2) Zinc sulphate (3) Potassium sulphate (4) Sodium sulphate

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Last Answer : Zinc sulphate

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Last Answer : Detergents give lather even with hard water

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Last Answer : High inflammable energy