Final answer:
The dissolution reaction of iron(III) nitrate in water is written as Fe(NO3)3(s) → Fe3+(aq) + 3NO3−(aq). Iron(III) nitrate is considered soluble because all nitrates are soluble, and it dissociates into iron ions and nitrate ions in water.
Step-by-step explanation:
The dissolution reaction for iron(III) nitrate, or Fe(NO3)3, in water can be represented as follows:
Fe(NO3)3(s) → Fe3+(aq) + 3NO3−(aq)
Iron(III) nitrate is considered soluble in water. According to solubility rules, all nitrates are soluble, which means that when iron(III) nitrate is placed in water, it dissociates completely into iron ions (Fe3+) and nitrate ions (NO3−).