[H+] for a solution is 1.87 x 10-11 M.
This solution is:

A. Acidic
B. Basic
C. Neutral

Basic

Explanation:

pH = -log[H⁺] = - log(1.87 x 10⁻¹¹) = 10.73 (basic solution)

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.