Co(II) was used as an internal standard to analyze a sample ofTi(IV) with atomic absorption spectroscopy (AAS). A standardmixture containing 1.40 μg Co/mL and 1.35 μg Ti/mL measured by AASproduced a signal-to-signal ratio of 2.41 Ti: 1.00 Co. A mixturewas prepared by combining 4.50 mL of a Ti(IV) solution of unknownconcentration with 4.00 mL of a 14.1 μg/mL solution of Co(II). Theabsorbance of the mixture at the Ti(IV) wavelength was 0.175 andthe absorbance at the Co(II) wavelength was 0.187. Determine theconcentration, in moles per liter, of Ti(IV) in the originalunknown solution.
