$10$mol$\%$ of $A$ in nitrogen $($inert$)$ at $100C$ and $2$ atm enters an isothermal open tubular reactor operating at $300C,$ where the following gas phase reaction occurs:

$A2B$

The reactor was designed to convert at least $50\%$ of A entering the reactor. A technician sampling the reactor exit gas reported $10$mol$\%$ of $B$ in the leaving gas mixture. There is a $10\%$ pressure drop across the reactor. Does the reactor operate as per the design specification?