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<p>As someone with multiple types of engineering degrees: who ever told you that knows very little about chemical engineering.</p>
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<p>True, but it depends on your concentration / what you do after graduation. Someone that studies Catalysis will need much more chemistry than someone that that performs improvement or separations in a field with a well established process (e.g. oil and gas).</p>
<p>In college, most ChE students do get a good bit of chemistry, though. Typically two semesters of inorganic chemistry, two semesters of organic chemistry, two semesters of thermo, and one semester of quantum chemistry. Some programs also require additional courses (instrumental analysis and synth lab, for example). </p>
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<p>That may be a saying at your school for some reason. No one said that when I was in school. The ChE curriculum was only three classes short of the Chem curriculum (it was so easy to earn the double major as a ChE that the school had to explicitly forbid it). </p>
<p>After graduation, your use of chemistry will depend on your field (as I mentioned).</p>
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<p>At Exxon, sure. That’s because the chemical phenomenon of the oil refining process and basic chemical processes are well known. You just read it in a book. Even then, though, those classes will be useful in allowing you to understand what’s in the book. If you’re scaling up a laboratory process at a pharmaceutical company, on the other hand, those subjects will be extremely useful.</p>
<p>At an undergrad level, you learn a little bit about everything to cover the entire field. In practice, some chemical engineers use catalysis and reactor design, and some don’t. Some use fractional distillation columns, and some don’t. Some use mass transport, and some don’t. Be careful about drawing an incorrect conclusion about a field, school, industry, or…well… anything in life by listening to a small sample size.</p>