In catalytic reforming, reformate is a high-octane gasoline component. For unleaded reformed gasoline, select the typical upper-end research octane number (RON) value achievable.

Introduction / Context:
Catalytic reforming upgrades naphtha by dehydrogenation and aromatization, creating high-octane reformate used in gasoline blending. Understanding typical octane ranges helps in product slate optimization and compliance with gasoline specs.

Given Data / Assumptions:

• Unleaded reformate (no TEL/lead additives).
• RON basis considered for comparison.
• Modern Pt/bi-metal catalysts under standard severity.

Concept / Approach:
Reforming boosts octane substantially, with reformates commonly in the upper 80s to 90+ RON depending on feed severity and constraints (hydrogen balance, coke formation, aromatics limits). For a general upper-end typical value in an exam context, 90 is a reasonable benchmark for unleaded reformate blending quality.

Step-by-Step Solution:

Verification / Alternative check:
Plant data often show reformate pools at ~88–95 RON; precise values depend on severity and feed quality.

Why Other Options Are Wrong:

Common Pitfalls:
Confusing motor octane number (MON) with RON; RON values are higher.

Final Answer:
90