MCAT Chemistry Question — Bond Angles
Which of the following pairs of molecules have bond angles that are the most similar? A. CH4, CO2 B. BF3, NH3 C. H2O, SO2 D. CH4, H2O Click for Explanation Similar bond angles generally – but not always – imply…
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Category MCAT Chemistry Question
Read MoreMCAT Chemistry Question — Bond Angles
MCAT Chemistry Question — Pressure Reduction
The pressure above a solid compound is slowly reduced. Which of the following is true? A. If the substance is H2O, it will transition from solid directly into gas. B. For all substances except H2O, the substance will transition into liquid…
MCAT Chemistry Question — Chromium
What is the most common electron configuration for Chromium (Cr)? A. [Ne] 4s23d4 B. [Ar] 4s23d4 C. [Ar] 4s13d5 D. [Ne] 3d Click for Explanation [Ne] indicates filled 2s and 2p orbitals, which is incorrect for chromium. [Ar] correctly indicates…
MCAT Chemistry Question — Solubility Product
Solid Fe(OH)3 is added to distilled water and allowed to reach equilibrium. At that time, [Fe3+]aq= 4 x 10-10 M. Calculate the Ksp of Fe(OH)3. A. 4 x 10-10 B. 4.8 x 10-19 C. 6.9 x 10-37 D. cannot be determined…
MCAT Chemistry Question — Titration Curve
A protic acid is being titrated with sodium hydroxide (NaOH) when the pH of the solution stays relatively constant across a significant concentration range of the NaOH. This region of the titration curve includes which of the following: A. the…
MCAT Chemistry Question — Photon
In a phenomenon called the photoelectric effect, a photon striking the surface of a metal may be absorbed and lead to the emission of a single electron. The energy of the emitted electron is described by E = hf-φ, where…
MCAT Chemistry Question — Standard Cell Potential
What is the standard cell potential for the spontaneous reaction below? 2 Ag(s) + Cl2(g) → 2 AgCl(s) Half-reaction Eo (V) Ag+ + e– → Ag 0.80 Cl2 + 2 e– → 2 Cl– 1.36 A. –0.24 V B. -0.56 V C. +0.56…
MCAT Chemistry Question — Nitrous Oxide
Amateur chemists make nitrous oxide at home using this (unbalanced) reaction: How many grams of NH4NO3 are required to produce 134.4 L of mixed gas if products are at STP? (Do NOT heat the ammonium nitrate above 240°C or it…
MCAT Chemistry — KNO3
What is the effect of adding KNO3 to a saturated aqueous solution of KCl? Ksp increases because more K+ ions are present. Ksp decreases because NO3– ions displace Cl– ions. The concentration of Cl– ions decreases because KNO3 addition drives…
MCAT Chemistry Question — Negative Slope
Which of the following best accounts for the negative slope of the liquid-solid equilibrium line in the phase diagram for water? H2O(s) has a greater density than H2O(l), which causes the solid to form liquid under high pressure conditions. H2O(s)…