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 Study of Compounds – Sulphuric Acid 28 Flashcards |
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Fill in the blank: Sulfuric acid can be prepared by the dissolution of sulfur trioxide (SO3) in ___ . |
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Water |
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True or False: Sulfuryl chloride (SO2Cl2) can be hydrolyzed to produce sulfuric acid and hydrochloric acid. |
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True |
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By passing chlorine gas through an aqueous solution of sulfur trioxide, what acid is produced? |
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Sulfuric acid (H2SO4) is produced along with hydrochloric acid (HCl). |
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Fill in the blank: The reaction Cl2 + SO2 + 2 H2O → 2 HCl + ___ produces sulfuric acid. |
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H2SO4 |
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Fill in the blank: Sulfur trioxide (SO3) is absorbed by concentrated sulfuric acid to form ___, also known as pyrosulfuric acid. |
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Oleum |
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True or False: The oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3) occurs at a temperature of 150°C in the presence of vanadium pentaoxide. |
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False. The oxidation occurs at 450°C. |
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What is the role of vanadium pentaoxide in the contact process? |
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Vanadium pentaoxide acts as a catalyst to facilitate the oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3). |
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Fill in the blank: The purification of gases in the contact process is important to enhance the efficiency of the ___ used. |
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Catalyst |
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Describe the chemical reaction that produces sulfur dioxide in the contact process. |
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Sulfur dioxide is produced by the roasting of iron disulfide (FeS2) in the presence of oxygen, according to the reaction 4FeS2 + 11O2 → 2Fe2O3 + 8SO2. |
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Dilute sulphuric acid reacts with metals to produce ___ and ___. |
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Dilute sulphuric acid reacts with metals to produce metallic sulphates and hydrogen. |
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True or False: Concentrated sulphuric acid can act as a dehydrating agent due to its high affinity for water. |
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True. |
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Fill in the blank: Concentrated sulphuric acid is used to prepare volatile acids like ___ and ___ from their salts. |
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HCl and HNO3. |
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How does dilute sulphuric acid interact with metallic carbonates? |
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Dilute sulphuric acid liberates carbon dioxide from metallic carbonates and bicarbonates, forming metallic sulphates, water, and carbon dioxide. |
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What is one of the primary industrial uses of sulphuric acid in relation to fertilizers? |
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Sulphuric acid is used in the manufacture of fertilizers such as ammonium sulphate and superphosphate of lime. |
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