A sample of 8.5 g NH 3 on oxidation produces 4.5 g of NO. Calculate the percent yield. Reaction: 4 NH 3 + 5 O 2 → 4 NO + 6 H 2O

A.30%

B.70%

C.15 %

D.60%

E. none of the above

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.