nucleophilic sunstitution alkyl halides

Questions: 1. Arrange the different solvent systems with the decreasing order of polarity. Disregard the amount of water mixed. Assume one percentage of composition. 2. Why would the temperature be kept constant? What could go wrong if the temperature changes? 3. How does the polarity of the solvent change with increasing the percentage of water in the mixture? 4. How and why does the rate of the Sul reaction change with changing the solvent polarity? Explain: Questions: 1. Arrange the different solvent systems with the decreasing order of polarity. Disregard the amount of water mixed. Assume one percentage of composition. 2. Why would the temperature be kept constant? What could go wrong if the temperature changes? 3. How does the polarity of the solvent change with increasing the percentage of water in the mixture? 4. How and why does the rate of the Sul reaction change with changing the solvent polarity? Explain