ALKENES and POTASSIUM MANGANATE(VII) This page looks at the reaction of the carbon-carbon double bond in alkenes such as ethene with potassium manganate(VII) solution (potassium permanganate solution).sing the reaction to test for carbon-carbon double bonds If an organic compound reacts with dilute alkaline potassium manganate(VII) solution in the cold to give a green solution followed by a dark brown precipitate, then it may contain a carbon-carbon double bond.
Common symptoms of infection with the virus include mild headaches, maculopapular rash, fever, malaise, conjunctivitis, and arthralgia. The first well documented case of Zika virus was in 1964, beginning with a mild headache and progressing to a maculopapular rash, fever, and back pain.t is most closely related to the Spondweni virus and is one of the two viruses in the Spondweni virus clade. The virus was first isolated in 1947 from a rhesus monkey in the Zika Forest of Uganda, Africa and was isolated for the first time from humans in 1968 in Nigeria.
Zika virus is a flavivirus, closely related to dengue. Outbreaks of zika virus have previously been reported in tropical Africa, in some areas in Southeast Asia and more recently in the Pacific Islands.ika virus infection causes a mild disease and, other than notification, no particular action is required. However, as Zika infection may cause a rash that could be confused with more serious diseases such as measles or dengue, these more serious diseases do need to be ruled out.