(c) Suppose the process proceeds as designed for several weeks, but one day the product gas and coolant streams emerge at higher temperatures, and the product contains significantly less Problems 541 WEBC09 06/04/2015 22:51:59 Page 542 benzaldehyde. The coolant flow rate is increased, but the product gas temperature cannot be brought down to its prescribed value, so the process must be shut down for troubleshooting. List and briefly explain several possible causes of the problem