Explain why Ca2+ ions would not be expected to form strong complexes with porphyrins.
Explain why Ca2+ ions would not be expected to form strong complexes with porphyrins.
OH- and CN- are both Brønsted bases, and both can form complexes with metal ions. Explain how OH- can be a much stronger Brønsted base than CN-, and at the same time much lower in the spectrochemical series.
The oxidation potential for solid calcium to form Ca2+ ions is -2.76 V. What is the reduction potential (E˚red) for a half-reaction involving Ca(s) and Ca2+ ions?________
Which ions are unlikely to form colored coordination complexes in an octahedral ligand environment? Cr2+ Co2+ Sc3+ Fe2+ Zn2+
Which of the following atoms would be expected to form negative ions in. bnary lonic compounds & which would be expected to form positive ions ? K, Li, o,V, Rb, cl, Au, I, Bi Expected to form negative ions! Expeeded to form positive ions? 11 Rank in (< the bonds (H-I, C-Br, IF, N-H) order of increasing Plarity using =, or ) 2. 0/0.3 points Previous Answers Predict which of the following compounds are ionic and which are covalent based...
EDTA (ethylenediaminetetraacetic acid) is the most widely used metal chelator in analytical chemistry, which forms strong 1:1 complexes with most metal ions. Water hardness can be determined by titrating Ca2+, Mg2+ and other metal ions with EDTA. During the titration, ammonium-ammonium chloride buffer is often used. Which of the following descriptions about the function of ammonium-ammonium chloride is/are correct? To act as a masking agent To form complex with Ca2+ and Mg2+ To be used as a metal ion indicator...
Use the electron configurations of the alkali metals to explain why they tend to form 1+ ions.
Hard water , which contains Mg2+ and Ca2+ ions tends to form a ring in a bathtub due to its reaction with the solute anions in soap. The formation of this insoluble material is an example of ? A an acid -- base reaction B a precipitation reaction C a redox reaction D a combustion reaction E a decomposition reaction
Explain why lead (IV) alkyl halides can form stable five coordinate complexes more easily than their silicon analogues and comment on the strength of the relevant carbon bonds.
Question 5 1) In the crystal structure of CuF, the Cu2+ ion is six coordinate with four F ions at a distance of 1.93 A and two F ions at a distance of 2.27A. Explain. 2) Which of the following ligands F, CN, H20 and NO2 will form significantlhy distorted octahedral complexes with cobalt (II)? Explain 3) Which of the following octahedral complexes are expected to show very weak tetragonal distortion and why? (a) [Cr(CDl (b) [Mn(H20) (c)Cr(Ho and [Ti(H20...
Calcium ions (CA2+) are stored in the smooth ER. Some signaling pathways in the cell cause the ER to release the calcium ions into the cytoplasm, which causes the calcium ion concentration in the cytoplasm to increase and at the same time the calcium ions concentration in the ER to decrease. Once the signaling pathways is turned off, the calcium is returned to the ER so that the concentration of calcium in the ER is very high and the concentration...