At equilibrium for an exothermic reaction, increasing pressure (for gas reaction with Δn < 0):
AShifts backward
BCannot predict
CShifts forward
DNo effect
Answer & Solution
Correct answer: C. Shifts forward
Pressure increase shifts equilibrium toward fewer moles of gas (Δn < 0 means products have fewer moles). So shifts forward, favoring products.
Related questions
For the dissociation of a weak acid HA, the degree of dissociation α is given (approximateAccording to Brønsted-Lowry, an acid is a substance that:If Q (reaction quotient) > K_c at some instant, the reaction will:Le Chatelier's principle states that a system at equilibrium under stress:K_sp of a sparingly soluble salt AB at 25 °C is 4 × 10⁻¹⁰. Molar solubility s of AB is:A buffer solution is most resistant to pH change when:K_w (ionic product of water at 25 °C) is:The pH of a 0.01 M HCl solution is: