How does the number of moles of silver nitrate correlate to the number of moles of the alkaline earth metal chloride? MgCl, + 2AGNO, --> 2AGCIĮ + Mg(NO,),
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- The pKa of Cl3CCO2H is 0.64. What is the pH of a 0.580 M solution? What percentage of the Cl3CCO2H is dissociated?1. What are some precautions that should be observed when collecting samples for DO determination, to ensure the amount of oxygen in the sample is representative of the DO at the site? 2. The standard Winkler method uses sodium iodide and sodium azide to be added at the same time as sodium hydroxide. What is the purpose of sodium azide? 3. Chlorinated tap water contains both chlorine (Cl2) and hypochlorite (OCl-) does the presence of these species affect DO results? Write equations to represent their individual interactions. 4. What effect would nitrate (NO2-), a common constituent of polluted water, have on DO results? Write a balanced equation for its interaction. 5. What is meant by seawater intrusion in drinking water supplies? How does this happen? What are some consequences of these phenomena?(i) How does O3react with lead sulphide? Write chemical equation.(ii) What happens when SO2is passed in acidified KMnO4solution?(iii) SO2 behaves with lime water similar to CO2.