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Concept explainers
(a)
Interpretation:
The half equation method of balancing redox equation needs to be explained.
Concept introduction:
A redox reaction is the reaction in which one reactant gets oxidized and another reactant gets reduced.
On losing electron/s by reactant, it gets positively charged/negative charge decreases and undergoes oxidation. On the other hand, when a reactant gain electron/s, it undergoes reduction and gets negatively charged/positive charge decreases on it.
(b)
Interpretation:
Disproportionation reaction needs to be explained.
Concept introduction:
A redox reaction is the reaction consists of reactant in which one reactant gets oxidized and another reactant gets reduced.
On losing electron/s by reactant, it gets positively charged/negative charge decreases and undergoes oxidation. On the other hand, when a reactant gain electron/s, it undergoes reduction and gets negatively charged/positive charge decreases on it.
(c)
Interpretation:
The term titration needs to be explained.
Concept introduction:
A titration is the method in which a known solution which termed as titrant is added from a burette to a measured amount of unknown solution and titrated to complete the reaction.
The unknown solution usually kept in conical or titration flask. A solution with known concentration is required for the determination of unknown solution with its concentration.
Completion of the reaction indicated by change in color of solution.
(d)
Interpretation:
The standardization of a solution needs to be explained.
Concept introduction:
A titration is the method in which a known solution which termed as titrant is added from a burette to a measured amount of unknown solution and titrated to complete the reaction.
The unknown solution usually kept in conical or titration flask. A solution with known concentration is required for the determination of unknown solution with its concentration.
Completion of the reaction indicated by change in color of solution.
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Chapter 5 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
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- In the box below, specify which of the given compounds are very soluble in polar aprotic solvents. You may select more than one compound. Choose one or more: NaCl NH4Cl CH3CH2CH2CH2CH2CN CH3CH2OH hexan-2-one NaOH CH3SCH3arrow_forwardOn the following structure, select all of the atoms that could ACCEPT a hydrogen bond. Ignore possible complications of aromaticity. When selecting be sure to click on the center of the atom.arrow_forwardRank the compounds below from lowest to highest melting point.arrow_forward
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- The dissociation of the weak acid, nitrous acid, HNO2, takes place according to the reaction: HNO2 (aq) ⇌ H+(aq) + NO2–(aq) K=7.2 X 10-4 When 1.00 mole of HNO2 is added to 1.00 L of water, the H+ concentration at equilibrium is 0.0265 M.A) Calculate the value of Q if 1.00 L of water is added? B) How will reaction shift if 1.00 L of water is added?arrow_forwardSuppose a certain copolymer elastomeric material “styrene-butadiene rubber”) contains styrene ("S") monomers –(C8H8)– and butadiene ("B") monomers –(C4H6)– and that their numerical ratio S:B = 1:8. What is the mass ratio mS:mB of the two monomers in the material? What is the molecular mass M of a macromolecule of this copolymer with degree of polymerization n = 60,000? Data: AC = 12.01 u, AH = 1.008 u.arrow_forwardLab Questions from Lab: Gravimetric Determination of Calcium as CaC2O4•H2O What is the purpose of the methyl red indicator? Why does a color change to yellow tell you that the reaction is complete? Why is the precipitate rinsed with ice-cold water in step 4? Why not room temperature or hot water? Why is it important that the funnels be placed in a desiccator before weighing (steps 1 and 5)?arrow_forward
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