19. What is the maximum number of hydrogen bonds can an...

19. What is the maximum number of hydrogen bonds can an ethanol molecule form with water around it? 1) 0 2) 1 3) 2 4) 3 5) 4 Question 20-24 are based on the following molecules 20. Which of the following is considered as amphipathic 1) A, B, C 2) B, D, E 3) D, E 4) B, C, E 5) All 21. Which of the molecules are very soluble in water? 1) A, B 2) B, C 3) A, C 4) D, E 5) E 22. Which of the molecules can be called ketone 1) A 2) B 3) C 4) D 5) E 23. Which of the molecules can be called fatty acid? 1) A 2) B 3) C 4) D 5) E 24. Which of the molecules can be called ketone 1) A 2) B 3) C 4) D 5) E 25. Which of the following atom cannot be involved in hydrogen bonding 1) H 2) C 3) N 4) O 5) all of them

Transcript

00:01 Hello students in this question there are multiple subsections we are going to answer it one by one the first question is how many possible hydrogen bonds are formed between ethanol and water considered an ethanol molecule c2 h5 o and hydrogen and a water molecule o hydrogen hydrogen and another water molecule o hydrogen and hydrogen the first hydrogen bond is formed between this oxygen oxygen of ethanol and hydrogen of one water molecule and the other hydrogen bond is formed between hydrogen of ethanol and the oxygen of another water molecule therefore our answer is two which corresponds to in the second part of the question, there are five compounds are given.

01:04 We have to answer the upcoming questions based on the five compound.

01:10 The second question is which of the following compounds are amphipathic.

01:18 Amphatic is a character exhibited by a molecule that contain both hydrophilic and hydrophobic characters.

01:32 Hydrophobic caroters.

01:35 The functional groups that exhibit hydrophilic carators are amine, nh2, carbonides, c double bond, o, acid derivative, or c -o -o -0 minus alcohol oh.

01:52 And the compounds are functional group that exhibit hydrophobic characters are alkyls like methane, ethyne, etc.

02:04 That keeps on going.

02:06 Here among the five given compounds the compound d and e has an alkyl substituted free hence.

02:15 Therefore they are amphipathic.

02:18 This corresponds to the option 3.

02:21 Therefore option 3 is our answer.

02:25 The next question is we have to find which of the following compounds soluble in water for a compound to be solid in water, it should contain carbon atom less than 5.

02:42 If a compound has greater than 5 carbon atom, it is insoluble in water.

02:48 And comparing the 5 compounds, the compound a and c has greater than 5 carbon atoms.

03:00 Therefore, they are insoluble in water.

03:02 This corresponds to option 3.

03:05 Therefore, option 3...

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