What condition must occur when a chemical reaction is at equilibrium? select one:
-the products and reactants are present in equal concentrations.
-the forward and reverse reactions are happening at equal rates.
-neither condition must occur when a chemical reaction is at equilibrium.
-both conditions must occur when a chemical reaction is at equilibrium.

Afraidsugar lol it’s the third one

Here is the link to the all information u need i mean answer key

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist

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 -