MCAT General Chemistry Questions & Answer

MCAT General Chemistry Questions & Answer ____ acid and _____ base titrations have equivalence points at pH 7 - CORRECT ANSWER - weak base, strong acid ____ acid and _____ base titrations have equivalence points at pH = 7 - CORRECT ANSWER - strong acid, strong base ____ acid and _____ base titrations have equivalence points at pH 7 - CORRECT ANSWER - weak acid, strong base -ate endings indicate (lesser or greater) amount of oxygen - CORRECT ANSWER - greater -ic endings indicate (lesser or greater) charge - CORRECT ANSWER - greater -ite endings indicate (lesser or greater) amount of oxygen - CORRECT ANSWER - lesser -ous endings indicate (lesser or greater) charge - CORRECT ANSWER - lesser (n + ℓ) rule - CORRECT ANSWER - electrons fill the principal energy levels and subshells according to increasing energy 1/[A] vs. time curve of second-order reaction - CORRECT ANSWER - slope is k 2 types of chemical bonds - CORRECT ANSWER - ionic or covalent acid dissociation constant - CORRECT ANSWER - Ka = [H3O+][A-]/[HA] actual yield - CORRECT ANSWER - typically lower than theoretical yield adiabatic processes - CORRECT ANSWER - exchange no heat with the environment alkali metals - CORRECT ANSWER - typically take on an oxidation state of +1 and prefer to lose an electron to achieve a noble gas-like configuration alkaline earth metals - CORRECT ANSWER - take on an oxidation state of +2 and can lose 2 electrons to achieve noble gas-like configurations all monatomic anions end in ____ - CORRECT ANSWER - -ide amphiprotic species - CORRECT ANSWER - amphoteric species that specifically can behave as a Bronsted-Lowry acid or Bronsted-Lowry base amphoteric species - CORRECT ANSWER - can behave as an acid or base angular momentum of an electron (Bohr model) - CORRECT ANSWER - L = nh/2π (n is principal quantum number, h is Planck's constant = 6.626e-34 J*s) anions are generally ______ than their corresponding neutral atom - CORRECT ANSWER - largest anode - CORRECT ANSWER - always the site of oxidation, attracts anions Arrhenius acids - CORRECT ANSWER - dissociate to produce an excess of hydrogen ions in solution