Answer to Question #78733 in General Chemistry for rich

Question

Sodium rhodizonate is often used in forensic investigations to detect the presence of any residue from shooting a firearm. Burned and unburned particles from the gunpowder will be ejected with the projectile. In the photograph below, the residue from the gunshot is stained red by sodium rhodizonate at a pH of 2.8. How many mL of 0.65 M hydrochloric acid need to be added to a neutral solution of sodium rhodizinate to make 500.0 mL of solution with a pH of 2.800?