Question

ngs PaperPrint/Plo WEEP THE SEEP 2E L00 NTECATE

Hello, we were provided two unknown samples and asked to determine if our samples were alcohols or not, using the 2,4-di-nitrophenyl hydrazine test. Then we tested our positive sample with Fehlings test to determine that we had a Ketone and other sample using Lucas Reagent to determine that we had a secondary alcohol. We were given these graphs for our unknown samples to determine the connectivity/molecular struture. Please kindly assist or let me know what other information would help with this lab. Thanks a million

Answer 1

Molecular formula C_5 H_10 O Degree of unsaturation c_x Hy O_z Rightarrow (x + 1) -y/2 C_5 H_10 O Rightarrow (5 + 1) - 10/2 Rightarrow 6 - 5 = 1 C_5 H_10 O compounde has one double Bond using nmR spectrum (3H. S) 2.1 PPm (2H, T) 2.2 PPm (2H, Sexset) 1.5 PPm (3H, T)0.9PPm using above data the structure of compound is 0.9PPm 1.5PPm 2.2PPm 2.1PPm 2 Pertanone 2, 4 di nutro phonyl Hydrazine is used to test for carbonyl compound This compound gives positive Test with 2, 4, di Nitro Phenyl Hydrazine Ketones donot React with fehling Reagent Lucas Reagent (Zncl_2 + Hcl) is used to determine alcohols. Ketones do not React with Lucas Test Lucas Reagent