Reactions and tests involving halides and hydrogen halides

13. understand the following reactions:

i solid Group 1 halides with concentrated sulfuric acid, to illustrate the trend in reducing ability of the hydrogen halides

ii precipitation reactions of the aqueous anions Cl⁻, Br⁻ and I⁻ with aqueous silver nitrate solution, followed by aqueous ammonia solution

iii hydrogen halides with ammonia and with water (to produce acids)