Barrons SAT Subject Test Chemistry, 13th Edition

(D) This setup depends on water displacement of an insoluble gas. ...

(C) The coefficients give the molar relations, so 2.0 mol of HCl give off 1.0 mol of CO 2. Given 4.0 mol of HCl, you have ...

(E) Ksp = [Pb2+] [S2–]. Since [Pb2+] is given at 5.0 × 10–14 and because the formula is a 1:1 ratio, the [S2–] must also be th ...

(B) The introduction of the “common ion” S2− at 0.1 molar forces the equilibrium to shift to the left and reduce the Pb2+ conc ...

(A) According to the gas laws, only I will definitely cause an increase in the volume of a confined gas. ...

(D) In 1 mol of Al 2 (CO 3 ) 3 , nine oxygens (three carbonates with three oxygen atoms each) are in each formula unit, or 9 m ...

(D) When HA ionizes, it forms equal amounts of H+ and A− ions, but these amounts are very small because the Ka is very small. K ...

(C) Percent dissociation = ...

PRACTICE TEST 3 1. (B) The activation energy of the forward reaction is the energy needed to begin the reaction. ...

(D) For the reverse reaction to occur, activation energy equal to the sum of (B) + (C) is needed. This is shown by (D). ...

(C) The heat of the reaction is the heat liberated between the level of potential energy of the reactants and that of the produ ...

(A) The potential energy of the reactants is the total of the original potential energies of the reactants shown by (A). ...

(B) This is a single replacement reaction in which aluminum chloride forms. The formula for aluminum chloride is AlCl 3. ...

(D) The oxidation state of aluminum is changing from 0 to +3; therefore, the aluminum is being oxidized. ...

(E) The original solution of CuCl 2 is blue due to the presence of Cu2+ ions in solution. The copper(II) ions are being used i ...

(C) This equation shows the volume decreasing as the pressure is increased when the temperature is held constant. It is an exam ...

(B) This equation shows the pressure increasing as the temperature is increased when the volume is held constant. It is an exam ...

(A) This equation shows the volume increasing as the temperature is increased when the pressure is held constant. It is an exam ...

(D) This equation shows that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the compo ...

(B) The balanced reaction equation is: 2NaI(aq) + Pb(NO 3 ) 2 (aq) → 2NaNO 3 (aq) + PbI 2 (s) ...