I really need help with these Organic practice test please! Thank you! 14. Which

Question

I really need help with these Organic practice test please! Thank you!

14. Which of these compounds is the most acidic (A) OH (D) (C) 15. For the structure shown, which labeled hydrogen is the most acidic? O2H (D 16. The ring opening metathesis polymerization reaction has he following general reaction uation. (CH2 (CH2)E Au catalyst Which cycloalkene should be used to form this product? (B) cyclohepene (A) cyclobutene (D) cyclopentene (C) cyclohexene 17. The Suzuki coupling reaction has this general reaction Pd catalyst Which d should be coul using the compoun compound 3-bromotoluene to synthesize this Suzuki coupling reaction? (A) B(OH)2 B(OH)2

Explanation / Answer

14] compound D is more acidic compire to other compounds becouse anion of phenol can be stabilised through resonce and any structrulal feture that increases stability of conjugate base will increases acidity

15] as more number of resonce stucture of conjugate base a hydogen become more acidic in compound hydrogen A have more number of resonance structure as compire to outher hydrogen there for its more acidic in nature

16]   a chemical reaction is referred to as metathesis, exchange reaction, or double replacement reaction if it is of the type:
A-B + C-D A-D + C-B

so ans is c

17] The Suzuki reaction is the coupling of an aryl or vinyl boronic acid with an aryl or vinyl halide or triflate using a palladium catalyst. It is a powerful cross coupling method that allows for the synthesis of conjugated olefins, styrenes, and biphenyls. ans is c

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