B. Commercial nitric acid comes in a concentration of 16.0
mol/L. The density of this solution is 1.42 g/mL
Calculate the percent (w/w) of nitric acid, HNO3, in this
solution.
How many milliliters of the concentrated acid have to be taken to
prepared 250 g of a solution that is 10.0%(w/w) HNO3?
C. Citric acid, H3C6H5O7, occurs in plants. Lemons contain 5% to 8%
citric acid by mass. The acid is added to beverages and candy. An
aqueous solution is 0.688 m citric acid. The density is 1.049 g/mL.
What is the molar concentration?.
D. The solubility of CO2 in water is 0.161 g/100 mL at 20oC and a
partial pressure of CO2 of 760 mmHg. What partial pressure of CO2
is necessary in a soft drink canning process in order to allow the
solubility of CO2 to equal 0.886 g/100 mL?
E. What is the vapor pressure at 23 oC of a solution of 1.20 g of
naphthalene, C10H8, in 25.6 g of benzene, C6H6?. The vapor pressure
of pure benzene at 23 oC is 86.0 mm Hg; the vapor pressure of
naphthalene can be neglected. Calculate the vapor-pressure lowering
of the solution.
B. Commercial nitric acid comes in a concentration of 16.0 mol/L. The density of this solution...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by weight HNO3. a. What is the molarity of this solution of HNO;? b. What volume of this solution should be taken in order to prepare of 5.0 L of a solution of 0.15 M nitric acid by dilution with water? In order to obtain a precise concentration, the 0.15 M HNO solution is standardized against pure Hgo (molar mass = 216.59 g/mol) by titrating...
21. Commercial grade fuming nitric acid contains about 90% HNO3 by mass with a density of 1. 50 g/mL, calculate the molarity of the HNO, solution. A. 0.214 M B. 21.4M c. 2.14 M
Introductory chemistry 20 A nitric acid solution containing 71.0% HNO3 (by mass) has a density of 1.42 g/mL. ow many moles of HNO, are present in 2.36 L of this solution? b) Determine the molarity of the acid.
Analysis of Vinegar EXPERIMENT NAME SECTION DATE POSTLABORATORY ASSIGNMENT 1. A standard nitric acid solution is prepared using 0.425 g of sodium carbonate, NaCO3. Find the molarity of the acid if 33.25 mL are required to reach a permanent endpoint. 2 HNO, (aq) + Na2CO3(s) + 2 NaNO3(aq) + H2O(l) + CO2(g) 2 H OT 2. A 10.0-ml sample of household ammonia solution required 27.50 mL of 0.241 M HNO3 for neutralization. Calculate (a) the molar concentration of the ammonia...
The mass of a 1.00 L nitric acid stock solution is 1420 g, and the mass percent of HNO3 in it is 70.0%. Find the molar concentration of HNO3 (molar mass 63.01 g/mol) in this stock solution. (A) 6.76M (B) 11.1M (C) 15.8M (D) 22.4M (E) 22.5M
A standard nitric acid solution is prepared using 0.425 g of sodium carbonate, Na2CO3. Find the molarity of the acid if 33.25 mL are required to reach a permanent endpoint. 2 HNO3 + Na2CO3 = 2 NaNO3 + H2O + CO2
A chemist needs to determine the concentration of a solution of nitric acid, HNO3. She puts 875 mLof the acid in a flask along with a few drops of indicator. She then slowly adds 0.200 MBa(OH)2 to the flask until the solution turns pink, indicating the equivalence point of the titration. She notes that 145 mL of Ba(OH)2 was needed to reach the equivalence point. Solution map In this titration, the concentration of base is known and can be used...
A sample of concentrated nitric acid has a density of 1.41 g/mL and contains 70.0%HNO; by mass. What mass of HNO3 is present per liter of solution?
A chemist needs to determine the concentration of a solution of nitric acid, HNO3. She puts 905 mL of the acid in a flask along with a few drops of indicator. She then slowly adds 0.600 M Ba(OH)2 to the flask until the solution turns pink, indicating the equivalence point of the titration. She notes that 205 mL of Ba(OH)2 was needed to reach the equivalence point. a) How many moles of Ba(OH)2 are present in 205 mL of 0.600...
A sulfuric acid solution containing 571.6 g of H2SO4 per liter of solution has a density of 1.329 g/cm3. Calculate the following quantities for the solute in this solution. 9 pts 1. i. Mass percent ii. Molality iii. Molarity Table 1. Reference data Density @ Vapor Normal 20°C Pressure (torr) H20 1.86 0.00 0.512 100.00 0.998 17.5 2.53 80.1 0.8765 98.5 Normal point (oC) lKb value) boiling! (PC/m) point (C) Substance Formula Formula Kr value* Krvalue -20°C (°C/m) freezingb (g/mL)...