F yfi DUTTITU FUN 2. (3 pts) If 6.22 g of solid NaOH are mixed with 150. mL of 0.50 M H2SO, will any of the NaOH be...
Suppose 150.0 mL of 0.50 M HCl and 150.0 mL of 0.50 M NaOH, both initially at 23.0°C, are mixed in a thermos flask. When the reaction is complete, the temperature is 26.4°C. Assuming that the solutions have the same heat capacity as pure water, compute the heat released (in kJ). A: 3.64 B: 4.26 C: 4.98 D: 5.83 E: 6.82 F: 7.98 G: 9.34 H: 10.9
If 150 mL of 0.1 M HCl were mixed with 100 mL of 0.125 M NaOH what would be the pH of the resulting solution? A. 1 B. 2 C. 3 D. 4
A 103.2 mL sample of 1.00 M NaOH is mixed with 51.6 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 21.45 °C. After adding the NaOH solution to the coffee cup and stirring the mixed solutions with the thermometer, the maximum temperature measured is 30.30 °C. Assume that the density of the mixed solutions is 1.00...
3- Will PbF2(S) form when 100 mL of 0,010 M Pb(CH3O2)2(aq) is mixed with 100 mL of 0.0020 M NH F(aq)? Explain (show all your work). (K.pl PbF2) 4.110")
3. A 0.7026 g sample of an unknown acid requires 40.96 mL of 0.1158 M NaOH for neutralization to a phenolphthalein end point. There are 1.22 mL of 0.1036 M HCl used for back-titration. a. How many moles of OH are used? How many moles of Ht from HCI? moles OH moles H+ b. How many moles of Ht are there in the solid acid? (Use Eq. 5.) moles H+ in solid c. What is the molar mass of the...
2. A 0.2349 g sample of an unknown acid requires 33.66 mL of 0.1086 M NaOH for neutralization to a phenolphthalein end point. There are 0.42 mL of 0.1049 M HCI used for back-titration. a. How many moles of OH- are used? moles OH moles H b. How many moles of H+ from HCI? moles H c. How many moles of H+ are there ins solid acid? (Eq. 5) g/mol d. What is the molar mass of the unknown acid?...
4. (3 pts) If 2.55 g of NaOH were added to a 100.0 mL solution containing 0.10 M Ca(NO3)2, what (Ca?') remains in solution? Is there complete precipitation of Ca(OH)2?
2. Calculate the molarity (M) of 30.0 g of NaOH in 350 mL of NaOH solution. Show all the step by step work: 3. Calculate the amount of solute, in moles, grams or milliliters, needed to prepare the following solutions. Show all the step by step solution: a. 1.00 L of a 3.00 M NaCl solution (moles of solute) b. 2.00 L of a 1.50 M NaOH solution (grams of solute) c. Milliliters of 1.50 M NaCl solution to obtain...
10 Question (1 point) B See page 236 A 98.2 mL sample of 1.00 M NaOH is mixed with 49.1 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 21.85 °C. After adding the NaOH solution to the coffee cup and stirring the mixed solutions with the thermometer, the maximum temperature measured is 32.50 °C. Assume that...
Name Prelaboratory Assignment 9 (25 pts) 1. A sample of 0.72 g of Al is reacted with 17.0 mL of 2.4 M KOH. Which one is the limiting reagent? SHOW WORK 9 pts 2Al (s)+ 2KOH (aq) + 6 H2O ()-2KAI(OH), (aq)+ 3 H: (g) 2. If a salt has a solubility of 27.2 g/100 mL water at 25 °C, what volume of water would be needed to dissolve 12.4 g of the salt? 6 pts 3. Calculate the theoretical...