Vidio ụlọ ọrụ Ihe ngosi osisi sulfate ọla kọpa Ihe ngosi ụlọ ọrụ acetic acid Vidiyo gburugburu ụlọ ọrụ Mpaghara nchịkwa vidiyo ngwaahịa Ngosipụta ngwaahịa sulfate ọla kọpa Ngosipụta ngwaahịa glacial acetic acid