Yes, it is. When writing an argumentative essay, you are arguing for one side of the topic. For the counterclaim, you want to address the opposing view. In the same sentence, you want to explain why the opposing side is wrong (aka the rebuttal). The format is usually like this:
Though some may believe _______, in actuality (your viewpoint here) is correct because (evidence here).
Usually when writing a counterclaim and rebuttal, it is included at the end of the third paragraph of a five paragraph essay. Make sure you definitely end the third paragraph with a concluding sentence that relates to the topic sentence of that paragraph though.
