Answer:
increase the temperature
Explanation:
The solubility of a gas in a liquid will increase if: Lower the temperature of the solution , and therefore, lower the kinetic energy of the gaseous particles so they can escape the liquid phase less often.
The Lewis acids are electron pair acceptors due to the availability of vacant orbitals they accept electrons from the donor compounds.
Hence, and are Lewis acids.
2c2h2+502=4co2+H2O
this is the answer