Which of the following substances when added to 1L of water, would change the freezing point...
) Which of the following substances would cause the greatest drop in the freezing temperature if we dissolve 1 mol in a fixed amount of water? A) C6H12O6 (fructose) B) KNO3 C) NaCl D) CaCl2 E) All of these solutions would freeze at the same temperature.
Consider 1.00 mole of each of the following substances: 1) NaCl (sodium chloride) 2) CaCl2 (calcium chloride) 3) CH3OH (methanol) 4) Naphthalene (C10H8) Answer the following questions: A) Which one of the above substances would likely not change the freezing point of water at all? Explain. B) Which one of the above substances would likely lower the freezing point of water the most? Explain.
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
which of the following mixtures will be a buffer when dissolved in 1L of water? A. 0.2 mol of HBr and 0.1 mol NaOh B. 0.4 mol NH3 and 0.4 mol HCl C. 0.2 mol HC2H3O2 and 0.1 mol NaOH D. 0.3 mol KCl and 0.3 mol HCl E. 0.1 mol Ba(OH)2 and 0.2 mol HCl
Which ONE of the following solids when added to 1 L of water will change the pH from 2.80 to 6.25? (N.B. there is no change in volume). A) 2.53 x 10–3 mol LiOH B) 1.58 x 10–3 mol NaOH C) 1.02 x 10–2 mol KOH D) 4.42 x 10–2 mol Ca(OH)2 E) 6.19 x 10–3 mol RbOH
A4 Which ONE of the following solids when added to 1 L of water will change the pH from 2.80 to 6.25? (N.B. there is no change in volume). (A) 2.53 x 10-3 mol LiOH (B) 1.58 x 10-3 mol NaOH (C) 1.02 x 10-2 mol KOH (D) 4.42 x 10-2 mol Ca(OH)2 (E) 6.19 x 10-3 mol RbOH
If 15.0g of AlClsubscript(3) were added to the ice-water mixture, what would be the freezing point of the solution? Assume the experimental volume of solution was 65.3 mL, the experimental freeing point of solvent water was 0.5 degrees C, and Ksubscript(f) was 1.86 degreesC/M. Please show all work and math, this is for a lab report. Thank you!!
Which of the following is not true? a. The freezing point of sea water is lower than the freezing point of pure water. b. The boiling point of a water sample from the Salt Lake is lower than the boiling point of pure water. c. The freezing point of 0.1 M NaCl is lower than the freezing point of 0.05 M NaCl.
No water was added, the only substances in the flask was the lauric acid and the unknown. we were finding the freezing point. heated the glass to 60c everything dissolved took it out of hot bath and recorded temp drop which stopped at 39.44c Unknown # Identify the unknown: Data: nknen Mass of Lauric Acid 9427 kat Et 31.442 43,2 Freezing Point of Lauric Acid Mass of Unknown .922 Freezing Point of Mixture Results and Discussion: (SHOW WORK FOR CREDIT)...
Which of the following aqueous solutions has the lowest freezing point? The Kf of water is 1.86 kg.oC/mol. a. 0.8 m CH3OH (methanol) b. 0.4 m NaCl c. 0.3 m MgBr2 d. 0.2 m AlF3 e. 0.25 m Ca(NO3)2 Calculate the freezing point ONLY for the solution you marked as your answer above.