Can I use MacBook Air M2 dual charging adapter to charge my iphone 16

Charge and connect with the USB-C connector on your iPhone - Apple Support

Your iPhone 16 can charge off just about any "USB-C cable and power adapter compliant with the USB-C standard, including USB Power Delivery." It can also charge other small devices, like AirPods or Apple Watches, using USB-C Power Delivery at up to 4.5 watts, if you need to do that in a pinch.

Yes. The 35W Dual Charger uses generic USB-C meaning any USB-C certified device (ie; your iPhone) should work.