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Equations: Na OH(aq) + HCl(aq) rightarrow NaCl(aq) + H2O(l) used rightarrow Na2CO(aq) +HCl rightarrow NaCl(aq) + CO2 + H2O(l) Na2O(aq) + HCl(aq) rightarrow NaCl(aq) + H2O(g) Masss of Crucible 19.00 Initial mass of crucible and baking soda 24.00 Final mass of crucible and solid product 23.70 Mass of solid 1 y concentration of HCl 1 M Volume of HCl to reach the end point 26.3 ML Mass of Evlemeyer Flask Mass of Eveumeyer Flask and solid 144.5 Mass of Evlenmeyer Flask and Nacl 0.384 Stoichiometric Analysis You heated 5.00 g of baking soda in a crucible to produce 4.70 g of a solid product. The product could be NaOH, Na2CO3, or Na2O. What mass of NaOH could you have produced? This value is not correct. Please check your calculations and try again. What mass of Na2CO3 could you have produced? What mass of Na2O could you have produced? We can evaluate the three possible products by comparing the percent errors of the mass produced. You produced 4.70 g of product. We will compare the magnitude (absolute value) of the percent errors, so do not worry about the sign. Assuming you produced NaOH, what is the percent error? Assuming you produced Na2CO3, what is the percent error? Assuming you produced Na?0, what is the percent error? Using your results, which of the following equations best describes the thermal decomposition of baking soda? Incorrect: NaHCO3(s) rightarrow NaOH(s) + CO2(g) correct: 2NaHCO3(s) rightarrow Na2CO3(s) + cO2(g) +- H2O(g) Incorrect: 2NaHCO3(s) rightarrow Na2O(s) + 2CO2(g) + H2O(g) Incorrect: With these data, at least two of the above are possible. You are correct. Your receipt no. is 151-1534
Equations: Na OH(aq) + HCl(aq) rightarrow NaCl(aq) + H2O(l) used rightarrow Na2CO(aq) +HCl rightarrow NaCl(aq) + CO2 + H2O(l) Na2O(aq) + HCl(aq) rightarrow NaCl(aq) + H2O(g) Masss of Crucible 19.00 Initial mass of crucible and baking soda 24.00 Final mass of crucible and solid product 23.70 Mass of solid 1 y concentration of HCl 1 M Volume of HCl to reach the end point 26.3 ML Mass of Evlemeyer Flask Mass of Eveumeyer Flask and solid 144.5 Mass of Evlenmeyer Flask and Nacl 0.384 Stoichiometric Analysis You heated 5.00 g of baking soda in a crucible to produce 4.70 g of a solid product. The product could be NaOH, Na2CO3, or Na2O. What mass of NaOH could you have produced? This value is not correct. Please check your calculations and try again. What mass of Na2CO3 could you have produced? What mass of Na2O could you have produced? We can evaluate the three possible products by comparing the percent errors of the mass produced. You produced 4.70 g of product. We will compare the magnitude (absolute value) of the percent errors, so do not worry about the sign. Assuming you produced NaOH, what is the percent error? Assuming you produced Na2CO3, what is the percent error? Assuming you produced Na?0, what is the percent error? Using your results, which of the following equations best describes the thermal decomposition of baking soda? Incorrect: NaHCO3(s) rightarrow NaOH(s) + CO2(g) correct: 2NaHCO3(s) rightarrow Na2CO3(s) + cO2(g) +- H2O(g) Incorrect: 2NaHCO3(s) rightarrow Na2O(s) + 2CO2(g) + H2O(g) Incorrect: With these data, at least two of the above are possible. You are correct. Your receipt no. is 151-1534
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Reid WolffLv2
17 Jun 2019
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