[Southack]

The Venusian atmosphere is acidic, not mostly CO2?

[Puckster]

“The atmosphere of Venus is mostly carbon dioxide, 96.5% by volume. Most of the remaining 3.5% is nitrogen.”

http://hyperphysics.phy-astr.gsu.edu/hbase/Solar/venusenv.html

Okay, I was off by 1.5%.