Calculate the theoretical yield of potassium alum from 1.0000 g of aluminum, assuming that the aluminum is the limiting reagent. First, write the net reaction by adding the net ionic equations that represent the four steps in the synthesis: (view image for reactions)

Write the net reaction by adding these four reactions and canceling out species that appear on both sides.

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Net Reaction is,

For total yield,

as the moles are 2 for both aluminium and potash alum if we divide 1 gm by the mass of Al the outcome mole will be 0.3. since the moles are same so potash alum will also have 0.3 mole. Now multiply 0.3 moles by the mass of potash alum that is 474 so the ANSWER FOR THE YIELD WILL BE 142.2 gms

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the answer is the first option

explanation:

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the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.