HI,
the 35mm f/1.8 is Dx. Do consider the 35mm f/2. Slightly 'slower' as not AFs, but you mount the 2 at f/2 under the same condition, you will notice the Fx lens just might give you an edge over the Dx lens.
Needless to say both are sharp lens.
24 f/2.8 = 36mm on Dx. Nice outdoor but too cram in Hdb group shots. If you want a wide a wide prime, buy the 20mm f/2.8. Its phenomenal.
I tested all, 35 f/1.8, f/2, 24, 20. Got the 35 f/2 and 20 f/2.8. Totally changed the way I see things. They are all goo sharp and Contrasty lens.
Cheers!