although expensive, platinum is used as a catalyst to break down harmful gases in car exhaust into less…

although expensive, platinum is used as a catalyst to break down harmful gases in car exhaust into less harmful gases. which statement best describes platinum in this use?\nit is a homogeneous catalyst, so only a small amount is needed even though it exits with the products.\nit is a heterogeneous catalyst, so only a small amount is needed and it is easily separated from the products.\nit is a homogeneous catalyst, so although a large amount is needed, it is easily separated from the products.\nit is a heterogeneous catalyst, so a large amount is needed and it exits with the products.

although expensive, platinum is used as a catalyst to break down harmful gases in car exhaust into less harmful gases. which statement best describes platinum in this use?\nit is a homogeneous catalyst, so only a small amount is needed even though it exits with the products.\nit is a heterogeneous catalyst, so only a small amount is needed and it is easily separated from the products.\nit is a homogeneous catalyst, so although a large amount is needed, it is easily separated from the products.\nit is a heterogeneous catalyst, so a large amount is needed and it exits with the products.

Answer

Brief Explanations:

Platinum in car - exhaust systems is a heterogeneous catalyst. Catalysts lower the activation energy of a reaction and are not consumed in the reaction, so only a small amount is needed. Also, being a heterogeneous catalyst (exists in a different phase from the reactants), it is easily separated from the products.

Answer:

It is a heterogeneous catalyst, so only a small amount is needed and it is easily separated from the products.