{"id":180277,"date":"2025-01-04T08:54:15","date_gmt":"2025-01-04T08:54:15","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=180277"},"modified":"2025-01-04T08:54:24","modified_gmt":"2025-01-04T08:54:24","slug":"which-formula-name-pair-is-incorrect","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/04\/which-formula-name-pair-is-incorrect\/","title":{"rendered":"Which formula\/name pair is incorrect"},"content":{"rendered":"\n

Which formula\/name pair is incorrect?<\/p>\n\n\n\n

a. Fe3SO3 iron (III)sulfide<\/p>\n\n\n\n

b. FeSO3 iron (ll)sulfide<\/p>\n\n\n\n

c. Fe Siron (ll)sulfide<\/p>\n\n\n\n

d. FeSO4 iron (II)sulfate<\/p>\n\n\n\n

e. Fez53 iron (Ill)sulfide<\/p>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The incorrect formula\/name pair is c. Fe Siron (II) sulfide<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

In this case, the error lies in the way the chemical formula and name are presented. Let’s break down the rest of the pairs and identify the issue:<\/p>\n\n\n\n

a. Fe\u2083SO\u2083 iron (III) sulfide:<\/h4>\n\n\n\n
    \n
  • The formula Fe\u2083SO\u2083<\/strong> suggests that there are three iron (Fe) atoms for every three sulfite (SO\u2083) ions. The name “iron (III) sulfide” indicates that the iron has a +3 oxidation state. This is consistent with the formula because iron in the +3 oxidation state typically forms compounds like iron (III) sulfide (Fe\u2082(SO\u2083)\u2083). However, the correct empirical formula for iron (III) sulfide should be Fe\u2082(SO\u2083)\u2083<\/strong> instead of Fe\u2083SO\u2083. This suggests a small error in the formula, but the naming is correct for iron (III) sulfide.<\/li>\n<\/ul>\n\n\n\n

    b. FeSO\u2083 iron (II) sulfide:<\/h4>\n\n\n\n
      \n
    • The formula FeSO\u2083<\/strong> represents iron (II) sulfite, where iron has a +2 oxidation state, which is correct. The name “iron (II) sulfide” matches this oxidation state, so this pair is correct.<\/li>\n<\/ul>\n\n\n\n

      c. Fe Siron (II) sulfide:<\/h4>\n\n\n\n
        \n
      • The formula Fe Siron<\/strong> is nonsensical. “Siron” is not a valid chemical term or ion. It seems to be a typo or error in the name. The correct formula should be FeSO\u2083<\/strong> for iron (II) sulfide. The name “iron (II) sulfide” would be accurate when referring to iron in the +2 oxidation state. This makes option c<\/strong> incorrect.<\/li>\n<\/ul>\n\n\n\n

        d. FeSO\u2084 iron (II) sulfate:<\/h4>\n\n\n\n
          \n
        • The formula FeSO\u2084<\/strong> represents iron (II) sulfate, which is a common compound where iron is in the +2 oxidation state. The name “iron (II) sulfate” is accurate for this compound. Therefore, this pair is correct.<\/li>\n<\/ul>\n\n\n\n

          e. Fe\u2082S\u2083 iron (III) sulfide:<\/h4>\n\n\n\n
            \n
          • The formula Fe\u2082S\u2083<\/strong> represents iron (III) sulfide, which has iron in the +3 oxidation state, as indicated by the name “iron (III) sulfide.” Therefore, this pair is correct.<\/li>\n<\/ul>\n\n\n\n

            Conclusion:<\/h3>\n\n\n\n

            Option c. Fe Siron (II) sulfide<\/strong> is incorrect because “Siron” is not a valid term in chemistry and appears to be a typographical error. The correct formula and name would be FeSO\u2083 iron (II) sulfide<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

            Which formula\/name pair is incorrect? a. Fe3SO3 iron (III)sulfide b. FeSO3 iron (ll)sulfide c. Fe Siron (ll)sulfide d. FeSO4 iron (II)sulfate e. Fez53 iron (Ill)sulfide The Correct Answer and Explanation is : The incorrect formula\/name pair is c. Fe Siron (II) sulfide. Explanation: In this case, the error lies in the way the chemical formula […]<\/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-180277","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180277","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=180277"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180277\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=180277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=180277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=180277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}