{"id":23385,"date":"2024-04-15T06:32:58","date_gmt":"2024-04-15T06:32:58","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=23385"},"modified":"2024-04-15T06:32:58","modified_gmt":"2024-04-15T06:32:58","slug":"electrolysis-of-an-aqueous-solution-of-copper-sulphate-using-copper-electrodes-gives-a-copper-at-cathode-and-oxygen-at-anode-b-copper-at-anode-and-oxygen-at-cathode-c-copper-at-cathode-and-anodes","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/electrolysis-of-an-aqueous-solution-of-copper-sulphate-using-copper-electrodes-gives-a-copper-at-cathode-and-oxygen-at-anode-b-copper-at-anode-and-oxygen-at-cathode-c-copper-at-cathode-and-anodes\/","title":{"rendered":"Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives A. Copper at cathode and oxygen at anode B. Copper at anode and oxygen at cathode. C. Copper at cathode and anodes dissolve to give copper D. Hydrogen at cathode and oxygen at anode"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6aadd60c500c9\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Copper at cathode and oxygen at anode                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Copper at anode and oxygen at cathode.                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    Copper at cathode and anodes dissolve to give copper                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Hydrogen at cathode and oxygen at anode                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: Copper at cathode and oxygen at anode.<\/p>\n<p>When an aqueous solution of copper sulphate is electrolysed using copper electrodes, the <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> following reaction occurs at the cathode:<\/p>\n<p>$Cu^{2+} + 2e^- \\to Cu$<\/p>\n<p>This means that copper ions are reduced to copper metal at the cathode.<\/p>\n<p>The following reaction occurs at the anode:<\/p>\n<p>$2H_2O \\to O_2 + 4H^+ + 4e^-$<\/p>\n<p>This means that water is oxidised to oxygen gas and hydrogen ions at the anode.<\/p>\n<p>The overall <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> reaction is:<\/p>\n<p>$Cu^{2+} + 2H_2O \\to Cu + O_2 + 4H^+$<\/p>\n<p>This reaction shows that copper is deposited at the cathode and oxygen gas is evolved at the anode.<\/p>\n<p>The other options are incorrect because:<\/p>\n<ul>\n<li>Option B is incorrect because copper is deposited at the cathode, not the anode.<\/li>\n<li>Option C is incorrect because the anodes do not dissolve to give copper.<\/li>\n<li>Option D is incorrect because hydrogen gas is not produced at the cathode.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on 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