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Concept explainers
(a)
Interpretation:
The color observed for cresol purple indicator at pH value 1 has to be identified.
Concept Introduction:
Equivalence point ensures the titration reaction becomes completed and at this point the number of moles of titrant and the number of moles of analyte remain equal. We cannot see with naked eyes the completion of titration reaction – the titrant and the analyte becoming equal in stoichiometric proportion, hence we use a chemical compound called indicator which indicates the end of the reaction by color change.
The chemical compound which is used as indicator is capable of exhibiting different color in different pH range. The end point refers to the color change and indicates equivalence point has been reached.
(b)
Interpretation:
The color observed for cresol purple indicator at pH value 2 has to be identified.
Concept Introduction:
Equivalence point ensures the titration reaction becomes completed and at this point the number of moles of titrant and the number of moles of analyte remain equal. We cannot see with naked eyes the completion of titration reaction – the titrant and the analyte becoming equal in stoichiometric proportion, hence we use a chemical compound called indicator called which indicates the end of the reaction by color change.
The chemical compound which is used as indicator is capable of exhibiting different color in different pH range. The end point refers to the color change and indicates equivalence point has been reached.
(c)
Interpretation:
The color observed for cresol purple indicator at pH value 3 has to be identified.
Concept Introduction:
Equivalence point ensures the titration reaction becomes completed and at this point the number of moles of titrant and the number of moles of analyte remain equal. We cannot see with naked eyes the completion of titration reaction – the titrant and the analyte becoming equal in stoichiometric proportion, hence we use a chemical compound called indicator called which indicates the end of the reaction by color change.
The chemical compound which is used as indicator is capable of exhibiting different color in different pH range. The end point refers to the color change and indicates equivalence point has been reached.
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Chapter 11 Solutions
Quantitative Chemical Analysis 9e And Sapling Advanced Single Course For Analytical Chemistry (access Card)
- Don't used hand raiting and don't used Ai solutionarrow_forward2' P17E.6 The oxidation of NO to NO 2 2 NO(g) + O2(g) → 2NO2(g), proceeds by the following mechanism: NO + NO → N₂O₂ k₁ N2O2 NO NO K = N2O2 + O2 → NO2 + NO₂ Ко Verify that application of the steady-state approximation to the intermediate N2O2 results in the rate law d[NO₂] _ 2kk₁[NO][O₂] = dt k+k₁₂[O₂]arrow_forwardPLEASE ANSWER BOTH i) and ii) !!!!arrow_forward
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