My laptop is Sony E series VPCEH16EN laptop with 2 .10 GHz processor can I upgrade it to 3 .10 GHz processor

Per Sony's specification page, your laptop has an i3-2310M. This CPU is modular, so you can technically remove it and replace it. Will a compatible upgrade work? That very much depends on the computer's BIOS.

For reference, here is a list of mobile CPUs that are the same generation and use the same socket as your current CPU: https://ark.intel.com/products/codename/29900/Sandy-Bridge#@mobile

Unless Sony Support or some other source can confirm an upgraded CPU will work, this will be a matter of trial and error.
 

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