They may cover all or part of the body and are usually very itchy. 1  Hives usually break out first on the covered areas of the skin such as the trunk and upper parts of the arms and legs.  Wheals appear in batches. Each wheal may last from a few minutes to six hours.
Early years [edit]. Arrhenius was born on February 19, 1859, at Vik (also spelled Wik or Wijk), near Uppsala, Sweden, the son of Svante Gustav and Carolina Thunberg Arrhenius.oday, Arrhenius is best known for his study published in 1896, on the greenhouse effect.
If you need to use this equation, just find the ln button on your calculator. Using the Arrhenius equation The effect of a change of temperature You can use the Arrhenius equation to show the effect of a change of temperature on the rate constant-and therefore on the rate of the reaction.If the rate constant doubles, for example, so also will the rate of the reaction.he effect of a change of temperature. You can use the Arrhenius equation to show the effect of a change of temperature on the rate constant-and therefore on the rate of the reaction. If the rate constant doubles, for example, so also will the rate of the reaction.