A student will use a solution containing the complex (which has a molar absorptivity of 9.32 X 103 L cm-1 mol-1 at 470 nm)formed between Bi(III) and thiourea for his thesis experiment (investigation of its optical properties). To know the concentration, he used a calibrated UV-Vis spectrophotometer and 1.00-cm cell , and obtained absorbance of 0.528. To determine concentration, he multiplied molar absorptivity by MM of thiourea complex (MM: 437.3 g/mol) and used Beer’s law. The concentration he obtained is 1.99 X 10-7 M solution.
Atomic Structure
The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.
Shape of the D Orbital
Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
For the analysis below, find one step within design of experiment, interpretation and calculation of the given situation that is not correct. Write the incorrect step, and state why it is not correct. Write how you will change the step to make it correct. Why do you think he made the mistake ?
A student will use a solution containing the complex (which has a molar absorptivity of 9.32 X 103 L cm-1 mol-1 at 470 nm)formed between Bi(III) and thiourea for his thesis experiment (investigation of its optical properties). To know the concentration, he used a calibrated UV-Vis spectrophotometer and 1.00-cm cell , and obtained absorbance of 0.528. To determine concentration, he multiplied molar absorptivity by MM of thiourea complex (MM: 437.3 g/mol) and used Beer’s law. The concentration he obtained is 1.99 X 10-7 M solution.
Based on information given in previous question, propose the structure/formula of the complex n previous question. pls show your rationale for the answer.
Thiourea MM= 76.12
Bi AM: 208.94
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