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Stibnite, Sb2S3, is a dark gray mineral from which antimony metal is obtained. If you have 2.00 kg of an ore that contains 15.1% antimony, what mass of Sb2S3 (in grams) is in the ore? loading. See answer. loading. ... (9 grams of salt per 1000 grams of solution). The density of the NaCl solution is 1.0 g solution/mL solution. star. 4/5. …
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Metallic ore deposits contain many different sulfide and related ore minerals. Most are quite rare. ... solid solutions between them are common. The same holds true for the sulfosalts. ... molybdenite (Figure 9.35), and stibnite (Figure 9.36). The lusters of the samples in these photos are not particularly metallic, but many specimens of these ...
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A 8.85 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl (a q) and passed over a reducing agent so that all the antimony is in the form Sb 3 + (aq). The Sb 3 + (aq) is completely oxidized by 37.2 mL of a 0.135 M aqueous solution of KBrO 3 (aq).
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This result indicates that the leaching of antimony from the stibnite concentrate includes both diffusion- and chemical reaction-controlled processes verified by the study of Raschman et al., where the kinetics of leaching of stibnite by mixed Na 2 S and NaOH solutions was investigated. In that study, the leaching of the natural stibnite …
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Consider a reaction in which a 9.47 g sample of stibnite, an ore of Sb, is dissolved in hot, concentrated HCl(aq) and then passed over a reducing agent so that all the antimony is in the Sb" (aq) form. The Sbº(aq) is then completely oxidized by adding 39.8 mL of a 0.135 M aqueous solution of KBrO3(aq)the reducing agent.
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A 7.57 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 34.4 mL of a 0.125 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is
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This study investigated the leaching and electrowinning of antimony from a complex, high arsenic and gold-containing stibnite concentrate ore (As-Au-Sb ore) using slurry electrolysis (SE). The results indicated that the leaching efficiency of antimony was higher than 98%, and those of iron and arsenic were about 5.50% and 1.14%, respectively.
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A process of slurry electrolysis was proposed to treat arsenic and gold-containing stibnite ore. •. The preferable slurry electrolysis conditions were determined. …
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Engineering Chemical Engineering The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. A 7.69 g7.69 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl (aq)HCl (aq) and passed over a reducing agent so that all the antimony is in the form Sb3+ (aq).Sb3+ …
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This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution. Response surface methodology …
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Chemistry questions and answers. The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. A 7.29 g7.29 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl (aq)HCl (aq) and passed over a reducing agent so that all the antimony is in the form Sb3+ (aq).Sb3+ (aq).
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The Sb 3 + ( aq ) is completely oxidized by 38.7 mL of a. The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. A 8.87 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl ( aq ) and passed over a reducing agent so that all the antimony is in the form Sb ...
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In our previous study, the leaching and electrowinning of antimony from a high arsenic and gold-containing stibnite concentrate ore using SE process in a medium of HCl–NaCl was investigated Zhang et al. . The antimony was selectively leached, while gold and arsenic were retained in the residue as a raw material for further gold extraction.
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To calculate the percentage by mass of antimony in a sample of pure stibnite, first, you must determine the molar mass of the stibnite (Sb2S3) and the molar mass of antimony (Sb). The molar mass of stibnite is approximately 339.68 g/mol (calculated as 2*121.76 for Sb and 3*32.06 for S), and the molar mass of antimony is …
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Three types of ores occur at Xikuangshan: (i) quartz-stibnite ore, (ii) calcite-quartz-stibnite ore, and (iii) ... Since both Hg and Fe are primarily present as solid solution within stibnite, it can be presumed that the coupled substitution 2Sb 3+ ↔2Hg 2+ +Fe 2+ may be the major factor governing the correlation between Hg and Fe. However ...
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The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. A 8.85 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 37.2 mL of a 0. ...
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A 6.35-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq) is completely oxidized by 27.7 mL of a 0.130 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is. BrO3^- + Sb^3+= Br^- + Sb^5+
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The Sb3+ (aq) is completely oxidized by 45.0 mL of a 0.125 M aqueous. The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. A 9.91 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl (aq) and passed over a reducing agent so that all the antimony is in ...
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A 6.79 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq)) is completely oxidized by 35.0 mL of a 0.110 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is
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Leaching of Antimony from Stibnite Ore in KOH Solution for Sodium Pyroantimonate Production: Systematic Optimization and Kinetic Study. This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution.
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The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 9.62 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb 3+.The Sb 3+ (aq) is completely oxidized by 43.70 mL of a 0.1250 M solution of …
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In a similar study focused on the leaching kinetics of natural stibnite from mines in Slovakia, the performance of alkaline lixiviant solutions comprising 1, 2, 4 wt.% …
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Stibnite. Modified date: 04/09/2023. Stibnite is a sulfide minerals with chemical composition is antimony sulfide (Sb2S3). The principal ore of antimony. Lead-gray to silvery gray in color, it often develops a black, iridescent tarnish on exposure to light. It normally occurs as elongated, prismatic crystals that may be bent or twisted.
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Trace element concentrations and sulfur isotopic ratio of stibnite, and oxygen isotope of stibnite bearing quartz were analyzed to infer the ore source(s) for Sb …
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In this study, the dissolution of stibnite, Sb2S3, which is an antimony ore, in HCl solutions was investigated, taking into consideration the effect of particle size, acid concentration, stirring
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The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 8.19 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl (aq) and passed over a reducing agent so that all the antimony is in the form Sb3+ (aq). The Sb3+ (aq) is completely oxidized by 42.3 mL of a 0 ...
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A 6.51 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb (aq). The Sb* (aq) is completely oxidized by 32.1 mL of a 0.115 M aqueous solution of KBro, (aq).
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Leaching of Sb 2 S 3 ore in an alkaline system involves the combination of sodium sulphide (Na 2 S) and sodium hydroxide (NaOH) to form a solution of sodium …
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The calculated f values may not be accurate due to the folowing several important assumptions: (1) Sb concentration of the ore fluid decreases linearly along its path, as a rough approximation to the actual evolution of the ore-forming solution during Sb lost due to stibnite precipitation; (2) only one pulse of fluid to precipitate stibnite ...
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A 5.85 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 26.6 mL of a 0.125 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is:
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