Given the standard entropy values in the table, what is the value of `delta"sº"_"reaction"` for the following reaction?

2nis(s) + 3o2(g) → 2so2(g) + 2nio(s)
a. –149 j/mol·k
b. +149 j/mol·k
c. +28 j/mol·k
d. – 28 j/mol·k

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?