Comment on the following paragraph. In halides, MXn stoichiometry does not require a value of n so large as to prevent the approach of M+ ions, for steric or electrostatic reasons.
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Comment on the following paragraph. In halides, MXn stoichiometry does not require a value of n so large as to prevent the approach of M+ ions, for steric or electrostatic reasons.
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- Base on the chemical equation of the Haber process ½ N2(g) + 3/2 H2(g) = NH3(g), estimate DfH, for ammonia using bond dissociation energies. [DbondH,/ kJ mol–1: H–H = 436; NºN = 945; N–H = 391] Select one: a. –46.5 kJ mol–1 b. 735.5 kJ mol–1 c. –93.0 kJ mol–1 d. 93.0 kJ molUse the data (Drago Acid-Base Parameter) to calculate the enthalpy for the interactions of BF3 and (CH3)3B with (CH3)3N and (CH3)3P. Explain what the values indicate.List the following acids in order of increasing acid strength when reacting with NH3: BF3, B(C2H5)3, B[C6H2(CH3)3]3, B(CH3)3 (use arrows to indicate the order)
- 3. Please provide a justification for the following statement: lithium chloride dissolves in polar organic solvents. What would you expect for other group I metal halides?Give detailed Solution with explanation needed..don't give Handwritten answerWhat would be the observation following mixing BaCl2 and Pb(NO3)2?
- 1b) Suppose you decreased the pH of the biotin solution from 7.0 to 3.0 - what would happen to the ionizable group on a molecule of biotin as the pH shifted from 7.0 to 3.0? Briefly explain why you would expect that to happenWhy is (CH3)3Cl considered to be a Lewis Acid?Consider metal sulfites (MSO3) – these decompose upon heating to form the corresponding metal oxide (MO) and SO2 (note: M is a group II metal). Based on this information, please explain how the stability of the metal sulfites trends within the group and justify your answer. Which would you expect to be more stable: Na2SO3 or MgSO3?
- Zinc in its 2+ oxidation state is an essential metal ion for life.Zn2+ is found bound to many proteins that are involved inbiological processes, but unfortunately Zn2+ is hard to detectby common chemical methods. Therefore, scientists who areinterested in studying Zn2+-containing proteins frequentlysubstitute Cd2+ for Zn2+, since Cd2+ is easier to detect. (a) Onthe basis of the properties of the elements and ions discussedin this chapter and their positions in the periodic table, describethe pros and cons of using Cd2+ as a Zn2+ substitute.(b) Proteins that speed up (catalyze) chemical reactions arecalled enzymes. Many enzymes are required for proper metabolicreactions in the body. One problem with using Cd2+to replace Zn2+ in enzymes is that Cd2+ substitution can decreaseor even eliminate enzymatic activity. Can you suggest a different metal ion that might replace Zn2+ in enzymes insteadof Cd2+? Justify your answer.Each of the following properties shows a regular trend inGroup 1A(1). Predict whether each increases or decreases upthegroup: (a) melting point; (b) E−E bond length; (c) hardness; (d) molar volume; (e) lattice energy of EBr.Provide the correct IUPAC name for Sr₃P₂. (I) (II) (III) (IV) hexa- hepta- tri- tetra- octa- di- penta- mono- phosphite strontium phosphorus potassium phosphonium phosphide sulfur phosphate hydrate acid Delete