Highest Viscosity:<\/h3>\n\n\n\n
To determine which substance has the highest viscosity, we need to consider factors like molecular size, intermolecular forces, and structure. Viscosity increases with stronger intermolecular forces and larger molecules.<\/p>\n\n\n\n
- \n
- BeCl2<\/strong>: Beryllium chloride has ionic bonds, but it has a linear structure, which reduces the intermolecular attraction. As a result, its viscosity is relatively low compared to others.<\/li>\n\n\n\n
- SbBr3<\/strong>: Antimony tribromide is a larger molecule than BeCl2, with relatively strong van der Waals forces, but it\u2019s still less viscous compared to substances that have hydrogen bonding.<\/li>\n\n\n\n
- IF2<\/strong>: Iodine difluoride has a relatively low molecular mass and weak intermolecular forces (mainly dispersion forces). It would have a lower viscosity compared to substances with stronger intermolecular attractions.<\/li>\n\n\n\n
- AsI3<\/strong>: Arsenic triiodide is a molecular compound that exhibits van der Waals forces. It has a somewhat high molecular mass, but the forces at play here are weaker than hydrogen bonds.<\/li>\n\n\n\n
- OF2<\/strong>: Oxygen difluoride is a highly electronegative molecule with polar bonds. Its high electronegativity leads to dipole-dipole interactions, increasing its viscosity more than the others, but still not as much as a hydrogen-bonded compound.<\/li>\n<\/ul>\n\n\n\n
Answer<\/strong>: OF2<\/strong> has the highest viscosity due to its polar nature and stronger intermolecular forces compared to the others, but it’s still weaker than a hydrogen-bonded compound.<\/p>\n\n\n\n
\n\n\n\nHighest Surface Tension:<\/h3>\n\n\n\n
Surface tension is influenced by the strength of intermolecular forces at the liquid-air interface. Hydrogen bonding and polarity contribute to a high surface tension.<\/p>\n\n\n\n
- \n
- CH3CH2Cl<\/strong>: Ethyl chloride has dipole-dipole interactions, but no hydrogen bonding. This leads to a moderate surface tension.<\/li>\n\n\n\n
- CH3CH2CH2CH2<\/strong>: Butane is a nonpolar molecule with only dispersion forces. Nonpolar molecules tend to have lower surface tension because they don’t exhibit strong intermolecular forces.<\/li>\n\n\n\n
- CH3CH2CH2OH<\/strong>: 1-Propanol has hydrogen bonding due to the hydroxyl group (-OH). Hydrogen bonding significantly increases surface tension.<\/li>\n\n\n\n
- HOCH2CH2OH<\/strong>: Ethylene glycol has two hydroxyl groups, which means even stronger hydrogen bonding. This will give it a very high surface tension compared to other substances in the list.<\/li>\n\n\n\n
- CH2Br2<\/strong>: Dibromomethane has dipole-dipole forces due to its polar nature but doesn’t have hydrogen bonding. Its surface tension will be moderate compared to those with hydrogen bonding.<\/li>\n<\/ul>\n\n\n\n
Answer<\/strong>: HOCH2CH2OH<\/strong> (ethylene glycol) has the highest surface tension because it has the strongest intermolecular hydrogen bonds due to the two -OH groups, resulting in a high surface tension.<\/p>\n\n\n\n
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<\/figure>\n","protected":false},"excerpt":{"rendered":"Choose the substance with the highest viscosity: BeCl2, SbBr3, IF2, AsI3, OF2 QUESTION 40: Choose the substance with the highest surface tension: CH3CH2Cl, CH3CH2CH2CH2, CH3CH2CH2OH, HOCH2CH2OH, CH2Br2 The Correct Answer and Explanation is: Highest Viscosity: To determine which substance has the highest viscosity, we need to consider factors like molecular size, intermolecular forces, and structure. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-264960","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/264960","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=264960"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/264960\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=264960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=264960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=264960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- CH3CH2CH2CH2<\/strong>: Butane is a nonpolar molecule with only dispersion forces. Nonpolar molecules tend to have lower surface tension because they don’t exhibit strong intermolecular forces.<\/li>\n\n\n\n
- SbBr3<\/strong>: Antimony tribromide is a larger molecule than BeCl2, with relatively strong van der Waals forces, but it\u2019s still less viscous compared to substances that have hydrogen bonding.<\/li>\n\n\n\n