Apparatus is set up as shown. cotton wool soaked in concentrated hydrochloric acid A 1 B C D L I (ii) glass tube cotton wool soaked in concentrated ammonia solution After ten minutes, a white solid forms in the tube where the gases meet. (a) (i) Write the chemical equation for the reaction of ammonia with hydrogen chloride. Name the process by which the ammonia and hydrogen chloride gases move the tube. [1 (iv) The experiment was repeated at a higher temperature. Predict how the results of the experiment would be different. Explain your answer. (iii) At which point, A, B, C or D, does the white solid form? Explain why the whit solid forms at that point. The solid forms at Explanation (b). Some of the white solid is removed from the tube and dissolved in water [ (3​