Either of two answers are acceptable. The year was 1828, and the experiment was designed to  produce inorganic ammonium cyanate from the heated salts of potassium cyanate and ammonium sulfate.  
Either of two answers are acceptable. The year was 1828, and the experiment was designed to  produce inorganic ammonium cyanate from the heated salts of potassium cyanate and ammonium sulfate.  Unexpectedly, the experiment did not result in ammonium cyanate but instead produced one of its  isomers, an organic substance normally produced in the liver. FTP, name this first organic substance to be  synthesized in a laboratory, or name the German scientist whose accidental discovery launched modern  organic chemistry.
Either of two answers are acceptable. The year was 1828, and the experiment was designed to  produce inorganic ammonium cyanate from the heated salts of potassium cyanate and ammonium sulfate.  
Urea or Frederick Wohler