QUESTION 22The coarsely crystalline type of precipitate is desirable in gravimetric analysis because ofO greater possibility ofa high value ofO a lesser ease of filteringO a lesser degree of adsorptionelectrolyte additionsupersaturation ratioand washingof impurities

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Answered: The coarsely crystalline type of…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1. Indicate whether each of the following statements is true (T) or false (F) 1. () Mohr method for chloride volumetric determination uses potassium chromate as an indicator. The medium in which the titration should be conducted must be acidic. 2. () Solubility of precipitates in presence of excess precipitating agent increases. 3. () Colloidal precipitates contain very small particles. There should be expected a great deal of error due to adsorption. 4. () Usually a larger break in a titration curve as the concentration becomes larger. 5. () As compared to redox titrations, acid base titrations have less restrictions on selection of a suitable indicator.
None
(a) Interpret the variation, including the overall trend across the 3d series, of the following values of hydration enthalpies (in kJ mol·'). [Ca(H2O)«]²*: -2468; [Ti(H2O)«J*: -2700; [V(H2O)«]**: -2814; [Mn(H2O)6]**: -2743; [Fe(H2O)«]²+: -2843; [Co(H20)6]**: -2904; [Ni(H2O)c]*: -2986. (b) By making use of LFSE (Ligand field stabilization energy) in tetrahedral and octahedral geometries, predict whether hausmannite mineral (Mn3O4) has a normal spinel or inverse spinel structure. Describe the structure of the mineral in detail.
Kindly answer question c
why does a change in pressure not affect the colour of a equlibruim mixture
help me with those please
Comparing the two quantities based on the given condition, which is greater I or II? or are they equal? can the quantities be measured? Consider the analysis of Fe in ore using permanganate as titrant. Under the same acidic conditions I. % Fe with pre-reduction II. % Fe without pre-reduction
calculate the theoretical percent purity of the purified crystal
If blast furnace slag is activated by NaOH, resulting in the formation of alkali-activated slag (AAS) – what kind of phases form in this system over time? How does the precipitated phase assemblage change with a change in the composition of the precursor slag? What differences exist in these formed phases in AAS systems when compared to blended systems such as OPC-Slag mixtures?
16. Provide detailed explanation.
Calculate the saturation indices of the solutions described below and classify each as undersaturated, supersaturated, or in equilibrium. Saturation state with respect to: Anhydrite (CaSO4) [Ca2+] = 0.00002 mM [SO42-] = 25 mM “Amakinite” (Fe(OH)2) [Fe2+] = 0.1 mM; [OH-] = 0.0001 mM Siderite (FeCO3) [Fe2+] = 3 mM; [CO32-] = 10 mM
A sample of feldspar weighing 1.500g is decomposed, and eventually there is obtained a mixture of KCl and NaCl weighing 0.1801 g. These chlorides are dissolved in H2O, a 50-mL pipetful of 0.08333 N AGNO3 is added, and the precipitate is filtered off. The filtrate requires 16.47 mL of 0.1000N KCNS, with ferric alum as indicator. Calculate the percentage of K2O in the silicate.

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The coarsely crystalline type of precipitate is desirable in gravimetric analysis because of O greater possibility of O a high value of a lesser ease of filtering a lesser degree of adsorption electrolyte addition supersaturation ratio and washing of impurities