14 de diagnowanderthe two wepo pratau, *** heet sopper) hent sorden quld w a. State and explain the observations made the observations in tube 1.combustion tube il and combustion lube dll (mks) b. Write equation for the reaction for the reaction occurring at combustion tube I and Ill (1mk) C. give a reason why ice is mixed with sodium chloride (mk) d. describe how the identity of substance W can be determined (imk) e. describe how you can determine if liquid W is pure (2mks)give a reason give a reason why it is mixed with sodium chloride ​