Question

What is the rate order of this set of data?

Sucrose Time (h) .501 0 .451 .50 .404 1 .363 1.5 .267 3

It seems like a zero order reaction, but the rate changes for the last two entries. Therefore, can we assume that this is a 1st order reaction?

(this is problem 16.96 in "Chemistry: The Molecular Nature of Matter and Change")