Drop a small piece of sodium,about the size of a couple ofgrains of rice, into ethanol(absolute alcohol).n What do you observe?n How will you test the gas evolved?
Question
Drop a small piece of sodium,about the size of a couple ofgrains of rice, into ethanol(absolute alcohol).n What do you observe?n How will you test the gas evolved?
Solution
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Observation: When a small piece of sodium is dropped into ethanol, it reacts vigorously. Sodium reacts with ethanol to produce sodium ethoxide and hydrogen gas. You will observe effervescence due to the evolution of hydrogen gas. The sodium will start to fizz and move around the surface.
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Testing the gas evolved: The gas evolved in this reaction is hydrogen. You can test for hydrogen using the pop test. Collect the gas in a test tube. Bring a lighted splint near the mouth of the test tube. If the gas is hydrogen, it will burn with a 'pop' sound, confirming the presence of hydrogen.
Please note: Sodium is a highly reactive metal and should be handled with care. Always wear safety goggles and gloves when performing this experiment.
Similar Questions
4. What is the gas that will be used in this experiment?
The addition of dilute NaOH to a sample followed by heating evolved a gas, which turned redlitmus paper to blue. This reveals that the compound is likely to beA. an unknown compound of a gasB. an aldehydeC. an amideD. none of the aboveAn evolved gas that is neutral to litmus paper is likely to beA. carbon dioxide gasB. ammonia gasC. chlorine gasD. oxygenAn example of a choking gas is------------A. carbon monoxide gasB. oxygen gasC. nitrogen gasD. ammonia gasThe general formula for carboxylic acid isA. RCOB. RCOOC. RCOOOD. RCOOHEthanoic acid is the same as------------A. acetic acidB. methaneC. propaneD. acetoneEthanol is a compound that belongs to the family ofA. alkanoic acidsB. aldehydesC. alkanolsD. none of the aboveAkinade was given some ethanol in a small vial. She added 2 cm3 of ethanoic acid and a few dropsof concentrated H2SO4. On heating, he observedA. a pungent smellB. a choking smellC. no smell was given offD. a pleasant fruity smell
Set up the apparatus as shown in Chapter 2, Activity 2.5.n Take a spatula full of sodium carbonate in a test tube and add 2 mL of diluteethanoic acid.n What do you observe?n Pass the gas produced through freshly prepared lime-water. What do you observe?n Can the gas produced by the reaction between ethanoic acid and sodium carbonate beidentified by this test?n Repeat this Activity with sodium hydrogencarbonate instead of sodium carbonate.
What happens when a small piece of sodium is dropped into ethanol?’
When a small piece of dry sodium is puted in water it reacts vigorously to produceSelect an answerANitrogen gasBHydrogen gasCcarbon dioxideDSulphur dioxide
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