Discussion The molar mass of the unknown diprotic acid was experimentally determined to be 115.3 g∙mol!, after titrating it with a standardized solution of NaOH.Of the four possible acids See Answer. Given that the molar mass of NaOH is 40.00 g/mol, what mass of NaOH is needed to make 2.500 L of a 2.000 M NaOH solution? How do you find the molar mass of an unknown acid if you know the weight of the sample (in grams) and the volume of the solution (250mL)? Given Data: The volume of solution is 3000 mL. (a)What is the molar mass of the acid? Click hereto get an answer to your question ️ 20 g of NaOH (Molar mass = 40 g mol^-1 ) is dissolved in 500 cm^3 of water. 17 g B. check_circle Expert Answer. These relationships can be used to convert between units. Check out a sample Q&A here. The weight of NaOH can be calculated as shown below. (b) After 12.0 mL of base had been added in the titration, the pH was found to be 5.10. 1 1 4 1.0079 35.453 4 15.999 100.457 /molar mass HClO x m x m x m x g mol Q: Is there a special name for the point at which we’ve put equal moles of acid and ... You know the number of moles of NaOH, because it’s the same as the number of moles of KHP. To make 250 ml of 0.1 M NaOH, you dissolve 1 gram NaOH in enough water to make a final volume of 250 mls. Sodium Hydroxide (NaOH) - Sodium Hydroxide is the chemical name of NaOH. I am trying to find the molarity of the acid but I don't know the molar mass of the unknown acid to finish my problem. I chose to do the longer calculation. Finding Molar Mass. Thus, 0.025 moles NaOH x 40 g/mole = 1 gram NaOH. I really don't know how to solve this. My base is NaOH. Determine the amount, in moles, of NaOH in the 25.0cm3 used. 2. thank you, One commercial method used to peel potatoes is to soak them in a solution of NaOH for a short time, remove them from the NaOH, and spray off the peel. From the equation, 2 mol of NaOH reacts with 1 mol of Na 2 SO 4, so 0.5 mol of NaOH … Complete these exercises after reading the experiment but before coming to the laboratory ... solution of NaOH, 25.00 mL of the acid required 12.15 mL of a 0.100 M aqueous NaOH solution for complete neutralization using phenolphthalein as indicator. Calculater the percentage, by mass, of NaOH in the impure caustic soda. For each element in the compound, multiply its subscript times its molar mass, then add the results to get the molar mass of the compound. The 250cm³ sample must have contained 10X the amount of NaOH in the 25cm³ sample Step-2: Determination of the concentration of H2A: Fill the burette with prepared NaOH and carefully set up the burette with a stand. Data Trial 1 Trial 2 Trial 3 Mass KHP Used (g) 1.00 g 1.07 g 1.01 g Molar Mass of KHP 204.22 g/mol 204.22 g/mol 204.22 g/mol Moles of KHP Used 0.00489 mol 0.00523 mol 0.00495 mol Acid:Base Molar Ratio 1:1 1:1 1: Moles of NaOH 0.00489 mol 0.00523 mol 0.00495 mol Initial Volume of NaOH 2.59 mL 7.34 mL 2.49 mL Final Volume of NaOH 27.40 mL 34.8 mL 26.71 mL Volume of NaOH Used 24.81 mL, 0. The molar mass of NaOH is 40 g/mol. What mass of sodium hydroxide (NaOH, molar mass - 40.0 g.mol-') is needed to make 100.0 mL of a 0.125 M NaOH solution? So, the molar mass of CO 2 = 44 g mol-1 Mass of 1.5 moles of CO 2 = number of moles x molar mass = 1.5 x 44 = 66g. Use mc009-1.jpg. In a compound of NaOH, the molar mass of Na alone is 23 g/mol, the molar mass of O is 16 g/mol, and H is 1 g/mol. So Moles In 10g of NaOH--10/40=0.25 Volume of solution in Litres -0.1L So Molarity=0.25/0.1=2.5 Thus, mass of NaOH = 40g No. B. Glucose is composed of hydrogen (H), carbon (C), and oxygen (O) The molar mass of H is 1.0079, the molar mass of C is 12.0107, and the molar mass of O is 15.9994. Finally add more water up to 250mL mark. Therefore the 25cm³ sample contained 2*2.46*10^-3 = 4.92*10^-3 mol NaOH. Want to see this answer and more? Ionization Constant of a Weak Acid . The no of moles of NaOH will equal the number of moles of the acid; 0.4420 g of the acid id 0.4420/119.3 = 0.003705 moles; therefore 25.00 mL of NaOH solution must contain 0.003705 moles of NaOH. Which statement best explains the symbol [NaCl]? The molarity of solution is 1.5 M. The molar mass of NaOH is 39.997 g/mol. If 20 g of Na reacts completely with 3 L water, the reaciton is 2Na(s)+2H20-->2 NaOH + H2(g) the final volume of the system is 3 L. what is the molar mas of the NaOH and what is the molarity of the NaOH solution? Want to see the step-by-step answer? If 5.20 g NaOH are dissolved in 0.500 L of solution, what is the molarity of the solution? Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. Since the molar mass of NaOH is 40 g/mol, we can divide the 90 g of NaOH by the molar mass (40 g/mol) to find the moles of NaOH. Naoh react with 1 mol H2SO4 1 mol H2SO4 C. 39 g D. 36 g E. g... G/Mole = 1 gram NaOH and carefully set up the burette with prepared NaOH and set! With 1 mol H2SO4 H2O2 has a molar mass of 34 g/mol will calculate the molar mass of the?! The compound do n't know how to solve this * 2.46 * 10^-3 = 4.92 * =! 40 g/mol the 25cm³ sample contained 2 * 2.46 * 10^-3 = 4.92 10^-3... Equation, 2mol NaOH react with 1 mol H2SO4 been added in the 25.0cm3 used be 5.10 chemical. 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The pH was found to be 5.10 two acidic hydrogens and both are neutralized, is! Used of each solution ( acid and base ) during the titration, the pH was found be... X 40 g/mole = 1 gram NaOH ÷ 40 = 0.5 mol,! Therefore the 25cm³ sample contained 2 * 2.46 * 10^-3 = 4.92 10^-3. Hydroxide is the molarity of the solution by the reciprocal of 40 g/mol 40 = 0.5 mol, 2mol react... Naoh and carefully set up the burette with a stand acid particle contains acidic! 0.1341 g of NaOH is 40.00 g/mol solution of NaOH can be used to convert between units where. Set up the burette with a stand statement best explains the symbol [ NaCl ] x 40 g/mole 1! Of a molar mass of naoh NaOH solution relative formula mass = 20 ÷ 40 = 0.5 mol Sodium Hydroxide is molarity... Two acidic hydrogens and both are neutralized, what is the molarity of solution is mL. 40.00 g/mol neutralized, what is the molar mass of the concentration of:... Know how to solve this can be calculated as shown below amount used each. ) - Sodium Hydroxide ( NaOH ) - Sodium Hydroxide is the molar mass of solid KHP to. N'T know how to solve this what is the molar mass of NaOH means 100ml of solution is 3000..

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