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Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromate with evolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemical equation is
    Correct answer is '5'. Can you explain this answer?
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    Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide a...
    3Br2 + 3Na2CO3 → 5NaBr + NaBrO3 + 3CO2
    So, number of NaBr molecules = 5
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    Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide a...
    Balanced Chemical Equation
    The balanced chemical equation for the reaction of Br2 with Na2CO3 in aqueous solution is:

    Br2 + Na2CO3 → NaBr + NaBrO3 + CO2

    Number of Sodium Bromide Molecules Involved
    From the balanced chemical equation, it is clear that one molecule of Br2 reacts with one molecule of Na2CO3 to give one molecule of NaBr and one molecule of NaBrO3. Therefore, the number of sodium bromide molecules involved in the reaction is:

    2 NaBr

    However, it is important to note that the question asks for the number of molecules of NaBr, not the number of moles or the mass. Therefore, we need to convert the number of moles of NaBr to the number of molecules of NaBr.

    Molar Mass of NaBr
    The molar mass of NaBr is:

    NaBr = 1 Na + 1 Br = 22.99 g/mol + 79.90 g/mol = 102.89 g/mol

    Number of Moles of NaBr
    To find the number of moles of NaBr, we need to know the amount of Na2CO3 that reacts with Br2. Let's assume that we have 1 mole of Na2CO3. From the balanced chemical equation, we can see that 1 mole of Na2CO3 reacts with 1 mole of Br2 to give 2 moles of NaBr. Therefore, the number of moles of NaBr is:

    1 mole of Na2CO3 × 2 moles of NaBr/1 mole of Br2 = 2 moles of NaBr

    Number of Molecules of NaBr
    To find the number of molecules of NaBr, we need to multiply the number of moles of NaBr by Avogadro's number. Avogadro's number is 6.022 × 1023 molecules/mol. Therefore, the number of molecules of NaBr is:

    2 moles of NaBr × 6.022 × 1023 molecules/mol = 1.2044 × 1024 molecules of NaBr

    Rounding off to the nearest whole number, the answer is:

    5 molecules of NaBr
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    Chemical reactions involve interaction of atoms and molecules. A large number of atoms/molecules (approximately 6.023 × 1023) are present in a few grams of any chemical compound varying with their atomic/molecular masses. To handle such large numbers conveniently, the mole concept was introduced.This concept has implications in diverse areas such as analytical chemistry, biochemistry, electrochemistry and radiochemistry. The following example illustrates a typical case, involving chemical/electrochemical reaction, which requires a clear understanding of the mole concept. A 4.0 molar aqueous solution NaCl is prepared and 500 mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of the electrodes (atomic mass: Na = 23, Hg = 200; 1 Faraday = 96,500 coulombs)If the cathode is a Hg electrode, the maximum weight (g) of amalgam formed from this solution is Correct answer is '446'. Can you explain this answer?

    For certain substances such as ammonium chloride, nitrogen peroxide, phosphorus pentachloride, etc. the measured densities are found to be less than those calculatedfrom their molecular formula. The observed densities decrease towards a limit as thetemperature is raised. This is due to the splitting of the molecules into simpler ones. The process is reversible and is called thermal dissociation.Examples :With increase in the number of molecules, the volume increases (pressure remaining constant) and, in consequence, the density decreases. As the temperature rises, more and more dissociation takes place, and when practically complete dissociation occursthe density reaches its lowest limit.The extent of issociation, ice., the fraction of the total number of molecules which suffers dissociation is called the degree of dissociation. Gas density measurements can be used to determine the degree of dissociation. Let us take by general case where one molecule of a substance A splits up into n molecule of B on heating; i.e.,t = 0 at = teq a x nx Total no. of moles Observed molecular weight or molar mass of the mixtureQ.The K for the reaction is 640 mm at 775 K. The percentage dissociation of N2O4 at equilibrium pressure of 160 mm is

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    Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromate withevolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemicalequation isCorrect answer is '5'. Can you explain this answer?
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    Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromate withevolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemicalequation isCorrect answer is '5'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromate withevolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemicalequation isCorrect answer is '5'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromate withevolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemicalequation isCorrect answer is '5'. Can you explain this answer?.
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