MCAT PYQ Pattern Practice Hub

PYQ Pattern Practice Easy

PASSAGE 1 — ANTACID BACK-TITRATION A laboratory evaluates a 0.500 g antacid tablet whose active ingredient is calcium carbonate, CaCO3. The tablet is…

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

PASSAGE 1 — ANTACID BACK-TITRATION A laboratory evaluates a 0.500 g antacid tablet whose active ingredient is calcium carbonate, CaCO3. The tablet is…

Chemical and Physical Foundations / General Chemistry

N/A N/A

Open question

PYQ Pattern Practice Medium

PASSAGE 1 — ANTACID BACK-TITRATION A laboratory evaluates a 0.500 g antacid tablet whose active ingredient is calcium carbonate, CaCO3. The tablet is…

Chemical and Physical Foundations / General Chemistry

N/A N/A

Open question

PYQ Pattern Practice Easy

PASSAGE 2 — HYDROGEN PEROXIDE DECOMPOSITION Hydrogen peroxide decomposes as 2H2O2(aq) → 2H2O(l) + O2(g). In one trial at 298 K and 1.00 atm, a cataly…

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

PASSAGE 2 — HYDROGEN PEROXIDE DECOMPOSITION Hydrogen peroxide decomposes as 2H2O2(aq) → 2H2O(l) + O2(g). In one trial at 298 K and 1.00 atm, a cataly…

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Easy

PASSAGE 2 — HYDROGEN PEROXIDE DECOMPOSITION Hydrogen peroxide decomposes as 2H2O2(aq) → 2H2O(l) + O2(g). In one trial at 298 K and 1.00 atm, a cataly…

Chemical and Physical Foundations / General Chemistry

N/A N/A

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PYQ Pattern Practice Hard

PASSAGE 3 — ACETATE BUFFER A researcher prepares 1.00 L of a buffer containing 0.100 mol CH3COOH and 0.100 mol CH3COO−. The acid dissociation constan…

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

PASSAGE 3 — ACETATE BUFFER A researcher prepares 1.00 L of a buffer containing 0.100 mol CH3COOH and 0.100 mol CH3COO−. The acid dissociation constan…

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

PASSAGE 3 — ACETATE BUFFER A researcher prepares 1.00 L of a buffer containing 0.100 mol CH3COOH and 0.100 mol CH3COO−. The acid dissociation constan…

Chemical and Physical Foundations / General Chemistry

N/A N/A

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PYQ Pattern Practice Medium

PASSAGE 4 — ZINC–COPPER GALVANIC CELL A galvanic cell is assembled as Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s). Standard reduction potentials are E°(Cu2+…

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Hard

PASSAGE 4 — ZINC–COPPER GALVANIC CELL A galvanic cell is assembled as Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s). Standard reduction potentials are E°(Cu2+…

Chemical and Physical Foundations / General Chemistry

N/A N/A

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PYQ Pattern Practice Medium

PASSAGE 4 — ZINC–COPPER GALVANIC CELL A galvanic cell is assembled as Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s). Standard reduction potentials are E°(Cu2+…

Chemical and Physical Foundations / General Chemistry

N/A N/A

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PYQ Pattern Practice Easy

QUESTION 13: Which hydrogen-atom transition emits the photon with the greatest energy?

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Easy

QUESTION 14: Which element has the highest first ionization energy?

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

QUESTION 15: For 2Al + 3Cl2 → 2AlCl3, how many moles of AlCl3 form from 4.0 mol Al and 3.0 mol Cl2?

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Hard

QUESTION 16: The Ksp of AgCl is 1.8 × 10−10. What is its molar solubility in pure water?

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

QUESTION 17: Given ΔHf°[CO2(g)] = −393.5 kJ/mol and ΔHcombustion[CO(g)] = −283.0 kJ/mol, what is ΔH° for C(graphite) + 1/2 O2(g) → CO(g)?

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Hard

QUESTION 18: What is the osmotic pressure of a 0.100 M glucose solution at 298 K? Use R = 0.0821 L·atm·mol−1·K−1.

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Medium

QUESTION 19: For the exothermic equilibrium N2(g) + 3H2(g) ⇌ 2NH3(g), which change shifts equilibrium toward NH3?

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Hard

QUESTION 20: Assuming complete dissociation, what is the freezing-point depression of a 0.200 m CaCl2 solution in water? Kf = 1.86 °C/m.

Chemical and Physical Foundations / General Chemistry

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PYQ Pattern Practice Easy

PASSAGE 1 — ASPIRIN SYNTHESIS AND HYDROLYSIS A student prepares aspirin (acetylsalicylic acid) by reacting salicylic acid with excess acetic anhydrid…

Chemical and Physical Foundations / Organic Chemistry

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PYQ Pattern Practice Medium

PASSAGE 1 — ASPIRIN SYNTHESIS AND HYDROLYSIS A student prepares aspirin (acetylsalicylic acid) by reacting salicylic acid with excess acetic anhydrid…

Chemical and Physical Foundations / Organic Chemistry

N/A N/A

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PYQ Pattern Practice Medium

PASSAGE 1 — ASPIRIN SYNTHESIS AND HYDROLYSIS A student prepares aspirin (acetylsalicylic acid) by reacting salicylic acid with excess acetic anhydrid…

Chemical and Physical Foundations / Organic Chemistry

N/A N/A

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PYQ Pattern Practice Easy

PASSAGE 2 — SUBSTITUTION AT A CHIRAL CENTER A researcher studies the reaction of optically pure (R)-2-bromobutane with sodium ethoxide in ethanol. At…

Chemical and Physical Foundations / Organic Chemistry

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