Stir NaNO2(1.2 eq, 0.578g) in H2O at 00C for 5min, Same time take naphthylamine (1eq, 1g) in H2O at 00C.  After 5 min mix the two solutions to form diazonium chloride. Stir for 10 min. Add 2ml of HCl at cold condition. Then add resorcinol (1eq, 0.768g). You can observe the product by the color change.  

Best of luck

Im not familiar with this eq ;/ 

To naphthylamine (1 equiv.) in water (1 L for 1 M) at 0 C with stirring add HCl (2 equiv) portion wise. To this solution add dropwise sod. nitrite solution (1.2 equiv). After sterring for 30 minutes.

Pour portionwise (during 4-5 min.) the previously prepared solution onto a solution of phenolic compound (1 equiv) and NaOH (1 equivalent  in water (1L for 1 M).

Be very careful handling 2-naphthylamine - it is a potent carcinogen.  The commercial use of this material has long been banned in the West for the manufacture of azo colorants for this reason.

In addition, your chemical reaction scheme is incorrect.  The product would be expected to contain two OH groups.  The OH group that is shown is in the wrong position.