Question

can you please check this work for question 11 and 12?

12.Assuming the inorganic product of Na2S2O4.2H20 is HSO3', write a balanced equation for the reaction of 3-nitro phthalhydrazide with Na2S2O4.2H2O (hint: this is a redox problem). Redux N-H pe tloHt0 H+R N-H +2 H20 H-N Ox: NGS204 2 H0 3NO2S204 t2 H20 2 Na HS 2e 12H)x3 No H SO2 +e o Ht N-H o No HSO 2 H20 МИ. 12.Assuming the inorganic product of Na2S2O4.2H20 is HSO3', write a balanced equation for the reaction of 3-nitro phthalhydrazide with Na2S2O4.2H2O (hint: this is a redox problem). Redux H+R N-H 2 H20 H-N Ox: NOS2042 H202 NoHS 2e 12H) x3 3Na2S204 t 2H20 NO H SO2 0e lo H N-H N-H o No HSO 2 H20 МИ» 11.Draw a structure for the following compound. (10 pts) O-CH2-C 3 040 C.HO 0-ClhCH MONO 2 PPM 3 12.1 10.6 integral values Potn NMR 6.1 1. S 40 PPM 60 B0 100 120 140 Carhon 13 NMI 2t- -no 923 s'2- I521-

Answer 1

#11: Actually two triplets are formed by two consecutive -CH2-CH2- groups. Hence in case of ph-CH2-CH2-OH, we will get two triplets (corresponds to two -CH2- groups) and 1 singlet that corresponds to the H of -OH.

Hence the correct structure will be C6H5-CH2-CH2-OH.

2.9 ppm CH2 CH2 -OH 040 C H O singlet 3.8 ppm 2 ppm 10 triplet triplet CH MONO CH2 CH2 OH CH2 CH2 CH2-OH triplet triplet CH2-CH2-CH singlet PPM integral values P NM 6.1 40 PPM CH2 CH2OH 100 120 140 C6H5 Cab 13 NM 92- S21