jacobdismuke5093
07.07.2021 •
Chemistry
The molar mass of a compound can be determined by the freezing point depression method. The solution must be relatively dilute and you must know the molal freezing point depression constant of the solvent, Kf. Which statement regarding Kf is true?
A. Kf should be small so that the solvent will not sublimate.
B. Kf will change depending on what solute is dissolved in the solvent.
C. Kf should be negative so the freezing point of the solution will decrease.
D. Kf should be large so the temperature change will be large enough to measure.
Solved
Show answers
More tips
- G Goods and services How to sew a ribbon: Tips for beginners...
- L Leisure and Entertainment How to Learn to Draw Graffiti: Tips for Beginners...
- F Family and Home How to Remove Tar Stains: Tips and Recommendations from Experts...
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- S Sport How to Do a Jumping Split...
- H Health and Medicine How Did Inna Lose Weight on Dom 2?...
- F Family and Home How to Properly Fold Napkins in a Napkin Holder?...
- F Food and Cooking How to Set Up Ventrilo - The Ultimate Guide...
- S Science and Technology How to Make a Homemade Smoker: The Ultimate Guide...
- A Auto and Moto Battle for the Relocation of The Cherkizovsky Market: Who Won?...
Answers on questions: Chemistry
- C Chemistry A chemist mixes liquid Substance X and solid Substance Y in a beaker, then stirs the mixture vigorously. The mixture can be separated into two substances, one with the...
- C Chemistry Name and describe the type of boundary shown at A....
- C Chemistry Can someone help me?...
- C Chemistry An alpha particle is identical to a). a neutron b) a helium nucleus c) an electron d) a hydrogen nucleus...
- C Chemistry For the following chemical hcn (aq) + koh ( h2o (l) + kcn (aq) write the net ionic equation, including the phases....
- C Chemistry Name two hormones produced by the endocrine system and describe how they work with other organ systems to maintain homeostasis...
- C Chemistry 6. Using your understanding, number the following substances from least dense (1) to most dense (5). X air X_water I X_glass X_mystery a X_mystery b...
- C Chemistry Which cloud type is correctly classified as low-level, medium-level, or high-level? A. Altostratus: medium-level B. Cirrocumulus: medium-level C. Cumulus: high-level...
- C Chemistry What are the three products of respiration?...
- M Mathematics What is an equation of the line that passes through the points (3,-8) and (1, -2)? Put your answer in fully reduced form....
Ответ:
K should be large so the temperature change will be large enough to measure.
Explanation:
Let us recall that;
∆T = k m I
Where;
∆T= change in boiling point
K= freezing point constant
m= molality
i= Van't Hoff factor
Since the change in temperature depends on k, the larger the value of k the larger the temperature change(Ts - Tb). Hence; K should be large so the temperature change will be large enough to measure.
Ts= freezing temperature of pure solvent
Tb= freezing temperature of solution
Ответ:
dnfberbgiieur
Explanation: