Attempt Online<\/a><\/div>\n<\/div>\n Calcium chloride is commonly used as a drying agent in guard tubes (drying tubes) during the preparation of dry HCl gas.
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Hydrogen chloride (HCl) gas is acidic and reacts with basic drying agents like quicklime (CaO) or NaOH. Therefore, an acidic or neutral drying agent is required. Anhydrous calcium chloride (CaCl2) is a neutral salt and a highly efficient drying agent that does not react with HCl gas.
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Concentrated sulfuric acid is another common drying agent for HCl, but calcium chloride is often used in solid form in drying tubes. Other calcium halides like calcium bromide, iodide, and fluoride are less commonly used or less effective as drying agents for general laboratory purposes compared to calcium chloride.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"
Which one of the following materials is present in a guard tube (drying tube) that is used for preparation of HCl gas? [amp_mcq option1=”Calcium chloride” option2=”Calcium bromide” option3=”Calcium iodide” option4=”Calcium fluoride” correct=”option1″] This question was previously asked in UPSC CDS-2 – 2021 Download PDFAttempt Online Calcium chloride is commonly used as a drying agent in … <\/p>\n
Detailed SolutionWhich one of the following materials is present in a guard tube (dryin<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1088],"tags":[1110,1096,1239],"class_list":["post-86184","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1110","tag-chemistry","tag-inorganic-chemistry","no-featured-image-padding"],"yoast_head":"\nWhich one of the following materials is present in a guard tube (dryin<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-materials-is-present-in-a-guard-tube-dryin\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following materials is present in a guard tube (dryin\" \/>\n<meta property=\"og:description\" content=\"Which one of the following materials is present in a guard tube (drying tube) that is used for preparation of HCl gas? 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