In each test, iron(II) sulfate and iron(III) nitrate were combined with the same substance or substances. However, the sulfate and nitrate parts of the compounds didn’t participate in any of the chemical reactions; only the iron ions reacted. Comparing the results for each pair of tests, what can you conclude about the iron(II) and iron(III) ions?

explanation: no but i do not usually comment

b) nuclear ive learned that in a pedtrodic table

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l