Which of the following solutes will produce a greater increase in boiling point when it is added to 1.0Kg of water?
a) 2 moles of KCl
b) 1mol Co (NO3) 2
c) 2 moles K2CO3
d) 3 moles ethylene glycol C6H6O2
NooliBo point elevation depends on 3 factors i.e. boiling point elevation constant , vant Hoff factor and molality of solution
Which of the following solutes will produce a greater increase in boiling point when it is...
Need the answers of these two 25. Order the following aqueous solutions in ascending order of your expected freezing point a) 0.050m CaCl2 d) 0.050m HC2H3O2 b) 0.15m Naci c) 0.10m HCI e) 0.10m C12H22011 26. Which of the following solutes will result in a larger increase in the point of boiling by adding it to 1.0kg of water? a) 2 moles de KCI c) 2 moles K2CO3 b) 1mol CO(NO3)2 d) 3 moles glicol de etileno C4HO2 d)
WIRUS wereo Which substance would produce the largest boiling point elevation when added to 500 grams of water? All given substances dissolve completely in water. O A 1.6 mol Naci O B 3.2 mol ethanol O C 1.1 mol MgCl2 O D 2.2 mol ethylene glycol (HOCH2 CH2OH) E 3.4 mol methanol
(gnaH to noibbe ( (5 pts) Normal boiling point of benzene ( C6H6) is 80.1 °C. If you add 0.15 moles of a nonvolatile solute to 250.0 g of benzene, what is the vapor pressure of the benzene at 80.1 °C? SSTICL TID nctanoo is lezas gnossi0 amilov gi285159b (b nimondo noiibbe (o (5 pts) Ethylene glycol, (C2H6O2) used as an antifreeze. How many grams of ethylene glycol must be added to 1.0 L of water to reduce the freezing...
7.65 y Calculate the boiling and freezing points of water solutions that are 1.15 M in the following solutes: a. KBr, a strong electrolyte b. ethylene glycol, a nonelectrolyte c. (NH4)2CO3, a strong electrolyte d. Al2(SO4)3, a strong electrolyte
Given the following boiling point data, which one of the liquids would you expect to have the HIGHEST vapor pressure at room temperature? a) water, H2O; 100°C b) methanol, CH3OH; 64.96°C c) ethanol, CH3CH2OH; 78.5°C d) diethyl ether, CH3CH2-O-CH2CH3; 34.5°C e) ethylene glycol, HO-CH2-CH2-OH; 198°C
Which of the following compounds has the highest boiling point? 34.6°C 78.3°C 100°C 800 760 Normal boiling point 600 Vapor pressure (tor) Diethyl ether Water 400 Ethyl alcohol (ethanol) 200 Ethylene glycol 0 20 80 100 40 60 Temperature (°C) Select one: a. NH3 O b. H₂S о с. НСІ O d. H₂O According to the MO theory, which of the following molecules should not exist? Select one: a. Hez b. Hez c. H2 d. All of the above
You are given the following boiling point data, Which one of the liquids would you expect to have the highest vapor pressure at room temperature! a. ethanol, CH3CH2OH 78.5°C b. water, H20 100°C Oc. diethyl ether, CH3CH2 O CH2CH3 34.5°C Od. ethylene glycol, HO CH2 CH2 OH 198°C Oe methanol, CH3OH 64.96°C
MORE POST LAB QUESTIONS 4. Calculate the necessary amounts of solutes and solvent to make a 4 L bottle of antifreeze that will have a 35 degree change in the freezing point of water. Solutes are Al(SO4)3, Br and Mg(NO3)2. 5. Why would it not be useful to just use pure ethanol or pure ethylene glycol as an antifreeze since their normal freezing points are - 114.1°C and -12°C respectively. 6. Determine the amounts of solute and solvent needed to...
When calcium chloride is added to a sample of water, the boiling point will _________. A. not change B. first decrease, then increase C. increase D. decrease
Name --------- Show all work if you want to get partial credit. Good Luck! 1a. For each of the following compounds, predict whether you would expect it to be more soluble in water or hexane (C6H14). (a) 12 ------- (b) CaCl2 ---------- (c) HBr -- (d) C&H,OC4H, --- (e) CH3NH2 -------- 1b. Arrange the following aqueous solutions according to increasing freezing point: 0.2m glucose, 0.1m CaCl2, 0.1m MgSO4, 0.1m Na3PO4 (m is molality). Lowest f.p. ----- --------- highest f.p. 2....