Student or Learner
Here is a sentence describing a chemical manufacturing process.
"The solution of the compound was heated to 50C, stirred for 30 minutes, and then dried to obtain a powder product."
Is this sentence acceptable? I have a problem with it, because the subject of the sentence is "the solution", and "the solution" does not "obtain" the product (it is the person doing the experiment who "obtains" the product).
If it had been written in the active voice with the subject, 'solution': "The solution heated [itself] to 50C, stirred, and then dried to obtain a powder product", then you would be right to have a problem with it.