Amixture contains cobalt metal, copper metal, and tin metal. this mixture is mixed with nickel nitrate. which metals, if any, will react?
a. cobalt only
b. copper only
c. tin only
d. all 3

Cobalt only.

Explanation:

Nickel is more electropositive than tin, copper or cobalt.

According to the reactivity series of metals in aqueous solution only cobalt have the chance to react in displacing Nickel in this aqueous solution.

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 :

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