(a)
Interpretation:
The equilibrium constant for the reaction is to be determined along with the reason for the completion of this reaction.
Concept introduction:
The value of constant at equilibrium state is defined as the equilibrium constant. An equilibrium constant is achieved when the forward reaction and backward reactions are equal. The formula used is:
(b)
Interpretation:
To determine the reason for the statement that NH3(aq) cannot be used for fixing photographic film.
Concept introduction:
A stability constant or formation constant is somewhat like the equilibrium constant which is obtained when the forward
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Selected Solutions Manual For General Chemistry: Principles And Modern Applications
- Describe the preparation of KMn04 from pyrolusite ore (MnO4). How does the acidified permanganate solution react with the following: (i) Fe2+ ions (ii) Oxalic acid (C2H204) Write the ionic equations for the reactions involved.arrow_forwardWhich of the following methods will be effective for removal of metal ions from hard water? Choose all correct answers.a Addition of EDTA solution to solubilize the metal ions Treatment with catalysts Fractional precipitation with sodium hydroxide solution Addition of Ar gas Addition of chelating ligands Treatment with an ion exchange columnarrow_forwardA 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The analysis of metals was performed using complexation volumetry. Initially, an aliquot of 50.00 mL had its pH adjusted to 1.0 and titrated with a standard 0.03145 mol/L EDTA solution, requiring 6.95 mL to reach the end point. Subsequently, another 25.00 mL aliquot was buffered at pH=5 and titrated with the same EDTA solution, requiring 6.24 mL to reach the end point. Finally, a third aliquot of 25.00 mL was titrated at pH=11, requiring 11.10 mL of the same EDTA solution to complete the titration. Given the molar masses: Fe=55.845 g/mol; Al-26.982 g/mol and Sr-87.620 g/mol. a) Determine the percentage of each of the metals in the sample. b) Explain why the change in pH allows the determination of the three ions in this sample.arrow_forward
- Explain why ionic attractions are weaker in media with high dielectric constants, e. g.,water and aqueous buffers.arrow_forwardCalculate the volume of CO2 , measured at 19oC and 720mmHg pressure , which would be obtained by the action of excess HCl on 10.0g of Calcium trioxocarbonate (IV).arrow_forwardWhat is the yellow precipitate collected from the reaction N(CH3)4Ix with AgNO3? If all the iodine in N(CH3)4Ix were converted to the product, calculate the value of x. Using VSEPR, propose a structure for the polyiodide product. Also propose structures for the interhalogen species ICl2-, IF4-, and IF6-.arrow_forward
- Sketch the structure for the [PtCl3(H2C=CH2)]- anion and describe the platinum(II)-ethene bonding.arrow_forwardA hard water sample was found to have an equivalent of 0.1598 g CaCO3 (mw =100g/mol). What volume of 0.05M EDTA would be required to remove the calcium from the water sample?arrow_forwardWhat is the solubility of Cr(OH)3 in g/l at pH 9.55? Ksp for Cr(OH)3 = 6.30 x 10-31?arrow_forward
- (i) Name the method used for the refining of titanium. (ii) What is the role of Zn in the extraction of silver? (iii) Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?arrow_forwardWrite the balanced net ionic equations to describe the oxidation of Mn2+ to MnO4- by ammonium peroxydisulfate.arrow_forwardWhy is MgCl2•6H2O added in a preparation of EDTA solution?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning