(a)
Interpretation:
The term domain needs to be defined.
Concept introduction:
Electron domain is defined as number of lone pairs of electrons or bond pair of electrons around particular atom or molecule.
(b)
Interpretation:
The term floatation needs to be defined.
Concept introduction:
Flotation process is used to separate hydrophobic solid from a hydrophilic substance using air bubbles.
(c)
Interpretation:
The term leaching needs to be defined.
Concept introduction:
In the leaching process, the substances are extracted from solid by dissolving them into liquid.
(d)
Interpretation:
The term amalgam needs to be defined.
Concept introduction:
Amalgam is used to define an alloy which contains mercury as one of the metals it contained. Any alloy of mercury is known as amalgam. The difference is based on the type and amount of the other metal present in it.
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General Chemistry: Principles and Modern Applications (11th Edition)
- A scientist was tasked to extract Fe from an aqueous suspension that contains 106 g of Fe2O;. The following steps detail the transformation of Fe,O; (a9) to elemental iron. I Enough sulfur trioxide gas was bubbled to Fe,O; aqueous suspension to completely yield ferric sulfate. IL Then, 5.00 M nitric acid was added to ferric sulfate yielding aqueous solution of ferric nitrate I. Excess magnesium powder was added to the aqueous solution of ferric nitrate precipitating the solid iron. and the type of chemical reaction for [I], [II], [III]. Do not forget to indicate the states of the reactants and products а. Write the balanced chemical reaction (s, 1, g). (CHOICES: COMBINATION, SINGLE DISPLACEMENT, DOUBLE DISPLACEMENT) b. What is the final mass of iron? Express your answers in 3 significant figures. High-concentration HCl is supposed to be added at the last part of the procedure. с. Briefly state its purpose.arrow_forward2The reductant in Walden reductor, is a. any first group element b. metallic silver Oc KMNO4 O d. AGNO3 3In Potentiometric methods, species of interest is measured at the electrode. 2 a. Working b. auxiliary C. indicator o d. reference 23A 0.20 g sample of primary standard Na2C204 (134 g/mol) needed 37.22 mL of of KMNO4 solution to reach the end point. What is the molarity of KMN04 reagent O a. 0.008 M b. 0.055 M O c. 0.100M d. 0.016 Marrow_forwardWhich of the following compounds is reducing agent only: a. C12; b. HCl; c. KCIO; d. KCIO3arrow_forward
- (d) Compare the greenliness between the. following two schemes : Ca(NO3)2 acetic acid RScheme-I OH ÑO2 NO2 NaNO3 H2SO4 Scheme-II NO2arrow_forwardhe teaching and lear X + m/ilrn/takeAssignment/takeCovalentActivity.do?locator-assignment-... ☆ [Review Topics] [References] Use the References to access important values if needed for this question. In the laboratory you dissolve 18.5 g of potassium phosphate in a volumetric flask and add water to a total volume of 250 mL. What is the molarity of the solution? What is the concentration of the potassium cation? M. < M. What is the concentration of the phosphate anion? Retry Entire Group Submit Answer 7 more group attempts remaining Previous M. T Next ■ Save and Exit 11:08 PM 8/31/2022 X :arrow_forwardIrn/takeAssignment/take Lv2 | Online teaching and X Activity Series of Metals Irn/takeAssignment/takeCovalentActi... Q [Review Topics] (References] Li Use the References to access important values if needed for this question. Displace H, from HO(O, steam, Ba Sr or acid Ca Be sure to specify states such as (aq) or (s). Na Mg If a box is not needed leave it blank. Displace H; from steam or acid Mn Zn Cr If no reaction occurs leave all boxes blank and click on "submit". Ese of Oxilation Fe Ni Predict if a reaction will occur when Ag(s) and hydrobromic acid(aq) are combined. If a reaction occurs, write a balanced equation for the reaction. Displace H, from increases Sn Pb acid Sb Cu Hg Do not displace H2 from HO(O, steam, Pd Ag Or acid Submit Answer Retry Entire Group 2 more group attempts remaining Pt Auarrow_forward
- om/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [Review Topics] [References] Use the References to access important values if needed for this question. Solid nickel(II) nitrate is slowly added to 150 mL of a 0.0578 M sodium cyanide solution. The concentration of nickel jon reguired to just initiate precipitation is M. Submit Answer Retry Entire Group 8 more group attempts remaining Next 8:03 PM 11/8/2020 op end prt sc delete home num backspace lockarrow_forward, Fet and titrated with 47.22 ml of 0.02242 M KMNO4 solution. Calculate the Exp: 5: A 0.8040 g an iron one is dissolved in acid. The iron is then reduced vs, Fet and titrated with 47.22 ml of 0.02242 M KMNO4 solution. Calculate the result of this analysis in term: hes :. البونابوم 1. a- % Fe (55.847) b- % Fe3O4 (231.54)arrow_forwardWhich of the following salts does NOT cause permanent hardness? B CaCl, © M8SO, OCa(HCO,), 2arrow_forward
- For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 4. Why is it necessary to carry out the reduction of iron and then the titration, before going on to the next sample 5. If you look carefully, there are pieces of tin metal on the bottom of the SnCl2 reagent solution. Why is it there?arrow_forwardFor Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 3. How would you prepare a complete anlaysis procedure using KMnO4 as the oxidant instead of K2CrO7? Include sample and solution preparation, approximate weights of samples and reagents, procedure and chemical reactions. In particular what is the purpose of the Zimmerman Reinhardt Reagent?arrow_forwardCalculate the concentration of CaHAO4 : a. In o solution which Is 0.020 M solutlon of H,CsH&O4. b. in a solution which is 0.020 M with respect to H;CH4O4 and 0.040 M with respoct to HCI.arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning