Write the formula for a complex formed between co3+ and nh3, with a coordination of 6

The complex formed between Co3+ and NH3 is [Co(NH3)6]^3+ and is called Hexaminecobalt(III).

Explanation:

The first step in the syntheses of these complexes requires oxidation to convert the metal from the +2 to the +3 oxidation  state

2Co2+ → 2Co3+ + 2e-

2Co3+ + 12NH3 → 2[Co(NH3)6] ^3+

The netto reaction will be:

2Co2+ + H2O2(aq)+ 12NH3 → 2 [Co(NH3)6] ^3+ + 2OH-

Hydrogen  peroxide as an oxidizing agent generates only OH– as reduced product, and the presence of ammonia guarantees that  the Co3+ will be stabilized immediately by formation of amine component.

The complex formed between Co3+ and NH3 is [Co(NH3)6]^3+ and is called Hexaminecobalt(III).

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :