These two processors are socket compatible: Intel® Product Specification Comparison
However, that does not mean you can swap one for the other. You must contact ACER and ask them if the i7-7700K is supported by THEIR BIOS.
If you attempt to do this upgrade without that information, you could damage your system.
This message was posted on behalf of Intel Corporation
Al Hill is right, you computer manufacturer determines the processor compatible with your motherboard, at this point I strongly recommend contacting you computer manufacturer and ask if this processor is compatible with your system before buying it.
You should be able to get support at the following link:
NOTE: This link is being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.
Thank you both for your answer.