The theoretical yield of a reaction is 75.0 grams of product and the actual yield is 42.0g. what is the percent yield? 75.0 56.0 31.5 178 none of these

I believe the percent yield is 56% if going by the formula of mass of actual yield/theoretical yield x 100%/

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -

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