{"id":21464,"date":"2022-01-25T17:06:38","date_gmt":"2022-01-25T11:36:38","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=21464"},"modified":"2022-01-25T17:06:38","modified_gmt":"2022-01-25T11:36:38","slug":"electrochemistry-viva-questions-with-answers","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/study-materials\/chemistry\/electrochemistry-viva-questions-with-answers\/","title":{"rendered":"Electrochemistry Viva Questions with Answers"},"content":{"rendered":"<h2><span style=\"color: #00ccff\"><strong>Electrochemistry Viva Questions with Answers<\/strong><\/span><\/h2>\n<p><strong>Question. 1. What is oxidation ?<\/strong><br \/>\n<strong>Answer.<\/strong> It is a process which involves loss of electrons by a substance.<\/p>\n<p><strong>Question.2. What is reduction ?<\/strong><br \/>\n<strong>Answer.<\/strong> It is a process which involves gain of electrons by a substance.<\/p>\n<p><strong>Question.3. What is a voltaic cell or electrochemical cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> It is a device of converting the chemical energy into electrical energy.<\/p>\n<p><strong>Question.4. Define the term emf ?<\/strong><br \/>\n<strong>Answer.<\/strong> The difference of potential which causes flow of current from one electrode to another electrode in an electrochemical cell is called the electromotive force (emf).<\/p>\n<p><strong>Question.5. What is a half cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> It is half of the electrochemical cell where either oxidation or reduction occurs.<\/p>\n<p><strong>Question.6. Mention the names of anode and cathode of a Daniell cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> Zinc strip acts as anode whereas copper strip as cathode.<\/p>\n<p><strong>Question.7. Can copper be oxidised by zinc ions ?<\/strong><br \/>\n<strong>Answer.<\/strong> No, zinc metal can be oxidised by Cu<sup>2+<\/sup> ions.<\/p>\n<p><strong>Question.8. What is a salt bridge ?<\/strong><br \/>\n<strong>Answer.<\/strong> A salt-bridge is a device to keep internal continuity between the two half cells of a voltaic cell and to prevent the physical contact between the two electrolytes. It also maintains the electrical neutrality of the electrochemical cell.<\/p>\n<p><strong>Question.9. What is the function of porous pot in a Daniell cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> The porous pot maintains the ionic continuity as well as prevents mixing of the two solutions.<\/p>\n<p><strong>Question.10. Name the electrolytes that can be used in salt bridge.<\/strong><br \/>\n<strong>Answer.<\/strong> Potassium sulphate, potassium chloride or potassium nitrate containing agar-agar.<\/p>\n<p><strong>Question.11. What is the direction of flow of electrons in an electrochemical cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> Electrons move from anode to cathode in an electrochemical cell.<\/p>\n<p><strong>Question.12. What is the direction of flow of current in an electrochemical cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> Current flows from cathode to anode.<\/p>\n<p><strong>Question.13. What is the effect of [Zn<sup>2+<\/sup>] on emf of the cell Zn | Zn<sup>2+<\/sup>|| Cu<sup>2+<\/sup> | Cu ?<\/strong><br \/>\n<strong>Answer.<\/strong> The emf decreases with the increase in molar concentration of Zn<sup>2+<\/sup> ions.<\/p>\n<p><strong>Question.14. What is the effect of [Cu<sup>2+<\/sup>] on emf of the cell Zn | Zn<sup>2+<\/sup>|| Cu<sup>2+<\/sup> | Cu ?<\/strong><br \/>\n<strong>Answer.<\/strong> The emf increases with the increase in molar concentration of Cu<sup>2+<\/sup> ions.<\/p>\n<p><strong>Question.15. What is the sign of AG for the reaction in electrochemical cell ?<\/strong><br \/>\n<strong>Answer.<\/strong> \u2206G is \u2013 ve for the reaction in electrochemical cell.<\/p>\n<p><strong>Question.16. What factor is kept in mind while selecting an electrolytic solution for the construction of a salt bridge ?<\/strong><br \/>\n<strong>Answer.<\/strong> The ions of the electrolyte in the salt should not react with ions of the electrolytes around electrodes.<\/p>\n<p><strong>Question.17. Is it possible to measure the single electrode potential ?<\/strong><br \/>\n<strong>Answer.<\/strong> No, because reaction in a half cell does not take place independently.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Electrochemistry Viva Questions with Answers Question. 1. What is oxidation ? Answer. It is a process which involves loss of [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Get Electrochemistry Viva Questions with Answers to infinity learn","custom_permalink":"study-materials\/chemistry\/electrochemistry-viva-questions-with-answers\/"},"categories":[21],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Electrochemistry Viva Questions with Answers - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"Get Electrochemistry Viva Questions with Answers to infinity learn\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infinitylearn.com\/surge\/study-materials\/chemistry\/electrochemistry-viva-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Electrochemistry Viva Questions with Answers - 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