{"id":1520,"date":"2025-04-24T06:27:33","date_gmt":"2025-04-24T06:27:33","guid":{"rendered":"https:\/\/medpharma12.com\/?p=1520"},"modified":"2025-04-24T06:27:33","modified_gmt":"2025-04-24T06:27:33","slug":"qualitative-analysis-of-unknown-organic-compound-s-for-preliminary-tests","status":"publish","type":"post","link":"https:\/\/medpharma12.com\/index.php\/2025\/04\/24\/qualitative-analysis-of-unknown-organic-compound-s-for-preliminary-tests\/","title":{"rendered":"Qualitative analysis of unknown organic compound\/s for preliminary tests."},"content":{"rendered":"

EXPERINMENT 02<\/strong><\/span><\/p>\n

Object<\/strong><\/span><\/p>\n

Qualitative analysis of unknown organic compound\/s for preliminary tests.<\/span><\/p>\n

Reference<\/strong><\/span><\/p>\n

    \n
  1. Vogel Arthere, Elementary practical organic chemistry, 2nd edition, 1966, published by CBS publisher, page No. 61-64.<\/span><\/li>\n
  2. Agarwal O.P., Practical Organic chemistry, published by Krishna educational publisher, Edition 2014, page no. 31-32.<\/span><\/li>\n<\/ol>\n

    Requirement<\/strong><\/span><\/p>\n

    Test tube, spatula, different compound, glass-rod etc<\/span><\/p>\n

    Theory<\/strong><\/span><\/p>\n

    Preliminary qualitative analysis of an unknown organic compound involves initial tests to determine the compound’s general properties and the presence of specific elements and functional groups. These tests include physical examination, solubility tests, and flame tests.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    \u00a0<\/strong><\/span><\/td>\nTest<\/strong><\/span><\/td>\nObservation<\/strong><\/span><\/td>\nInferences<\/strong><\/span><\/td>\n<\/tr>\n
    1<\/strong><\/span><\/td>\n(a)\u00a0 Nature<\/strong><\/span><\/td>\ni)\u00a0\u00a0 Solid<\/span><\/td>\nCarbohydrate, acid, phenol, amine , higher hydrocarbon may be present.<\/span><\/td>\n<\/tr>\n
    ii)\u00a0\u00a0 Liquid<\/span><\/td>\nAlcohol , ketone , aldehyde, ester, phenol, amines may be present.\u00a0<\/span><\/td>\n<\/tr>\n
    2<\/strong><\/span><\/td>\n(b)\u00a0 Colour<\/strong><\/span><\/td>\nYellow -Solid<\/span><\/td>\nm- Dinitrobenzene, p- Nitro toluene, nitro phenol , nitro aniline<\/span><\/td>\n<\/tr>\n
    Yellow -liquid<\/span><\/td>\nNitrobenzene.<\/span><\/td>\n<\/tr>\n
    Brown<\/span><\/td>\nP \u2013 Toluidine , resorcinol.<\/span><\/td>\n<\/tr>\n
    Blackish<\/span><\/td>\n\u03b1 \u2013 Naphthol<\/span><\/td>\n<\/tr>\n
    Pink<\/span><\/td>\n\u00df \u2013 Naphthol<\/span><\/td>\n<\/tr>\n
    Buff or reddish<\/span><\/td>\nAniline, phenol, Aromatic amine.<\/span><\/td>\n<\/tr>\n
    Colourless<\/span><\/td>\nSimple acid , alcohol, ester, ketone aromatic hydrocarbon.<\/span><\/td>\n<\/tr>\n
    3<\/strong><\/span><\/td>\nOdour<\/strong><\/span><\/td>\nCarbolic<\/span><\/td>\nPhenol, cresol.<\/span><\/td>\n<\/tr>\n
    Fishy<\/span><\/td>\nAmine<\/span><\/td>\n<\/tr>\n
    Sweet pleasant<\/span><\/td>\nEster, alcohol and halogen derivatives.<\/span><\/td>\n<\/tr>\n
    Bitter almonds<\/span><\/td>\nNitrobenzene,Benzaldehyde<\/span><\/td>\n<\/tr>\n
    Moth balls<\/span><\/td>\nNaphthalene<\/span><\/td>\n<\/tr>\n
    No particular\u00a0 smell<\/span><\/td>\nAromatic acid ,amide, carbohydrate<\/span><\/td>\n<\/tr>\n
    \u00a0<\/strong><\/span><\/td>\n\u00a0<\/strong><\/span><\/td>\n<\/tr>\n
    4<\/strong><\/span><\/td>\nFlame Test<\/strong><\/span><\/td>\nSooty flame<\/span><\/td>\nAromatic compound or aliphatic compound containing small proportion of hydrogen e.g . CHCI3,CCI4<\/span><\/td>\n<\/tr>\n
    Non sooty flame<\/span><\/td>\nAliphatic compound<\/span><\/td>\n<\/tr>\n
    Substance chars<\/span><\/td>\nCarbohydrate, sulphanilic acid.<\/span><\/td>\n<\/tr>\n
    5<\/strong><\/span><\/td>\nTest\u00a0 for\u00a0 unsaturation <\/strong><\/span><\/p>\n

    1. KMnO4 test. Substance + 2 ml of water shake well + 2 drops of dilute KMnO4 solution<\/strong><\/span><\/td>\n

    		Decolourisation of KMnO4<\/span><\/td>\nSaturated compound.<\/span><\/td>\n<\/tr>\n
    No decolourisation<\/span><\/td>\nUnsaturated compound.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u00a0<\/strong><\/span><\/p>\n

    Result: <\/strong>Qualitative analysis of unknown organic compound\/s for preliminary tests was done successfully.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

    EXPERINMENT 02 Object Qualitative analysis of unknown organic compound\/s for preliminary tests. Reference Vogel Arthere, Elementary practical organic chemistry, 2nd edition, 1966, published by CBS publisher, page No. 61-64. Agarwal O.P., Practical Organic chemistry, published by Krishna educational publisher, Edition 2014, page no. 31-32. Requirement Test tube, spatula, different compound, glass-rod etc Theory Preliminary qualitative […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","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":"","_glsr_average":0,"_glsr_ranking":0,"_glsr_reviews":0},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/posts\/1520"}],"collection":[{"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/comments?post=1520"}],"version-history":[{"count":1,"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/posts\/1520\/revisions"}],"predecessor-version":[{"id":1521,"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/posts\/1520\/revisions\/1521"}],"wp:attachment":[{"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/media?parent=1520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/categories?post=1520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/medpharma12.com\/index.php\/wp-json\/wp\/v2\/tags?post=1520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}