Coal (C) Can Be Heated with Steam (H₂O) at High

question 48

Multiple Choice

Coal (C) can be heated with steam (H₂O) at high temperatures to produce a mixture of hydrogen and carbon monoxide gases. Methanol, which is a useful fuel, can be produced from these gases by the reaction below. At a particular high temperature, the equilibrium concentrations are the following: [H₂]  0.095 mol/L, [CO]  0.035 mol/L, and [CH₃OH]  0.065 mol/L. What is the value of the equilibrium constant, K_c, for this reaction at this temperature?
2H₂(g)  CO(g) CH₃OH(g)

• A)4.70
• B)290
• C)206
• D)19.5
• E)4.86

---

Definitions:

Magnetic Field

A vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

Gyromagnetic Ratio

A constant for a given nucleus that relates its magnetic moment and angular momentum, important in NMR and MRI.

Proton Resonance

A nuclear magnetic resonance (NMR) technique used to determine the structure of organic compounds by observing the behavior of hydrogen nuclei in a magnetic field.

O-Chlorophenol

A type of chlorophenol with the chlorine atom bonded to the ortho position (adjacent to) of the hydroxyl group on the benzene ring.