What kind of ion is contained in salts that produce an acidic solution? a negative ion that attracts a proton from water a negative ion that releases a proton to water a positive ion that attracts a proton from water a positive ion that releases a proton to water

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The answer to this is the 3rd choice!

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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 -