For the reaction A(g) rightarrow B(s), a pressure of A is measure vs time. The p

Question

For the reaction A(g) rightarrow B(s), a pressure of A is measure vs time. The product B is nonvolatile. Then a plot of logarithm of the pressure of A vs time is found to be linear. What is the order of the reaction? the reaction is first-order. the reaction is zero order. there is no order, because the product has no pressure. the order is infinite, because when divide by zero pressure you get infinity. The reason that dry ice sublimes instead of melting (in a normal laboratory or classroom) is: the vapor pressure is above 1 atm. the critical point is above 1 atm. the triple point is above 1 atm. the molar mass of dry ice is greater than the molar mass of air. the dry ice has no water. Which does not have hydrogen-bonding? CH_4. H_2O. HF. NH_3 ethylene glycol. All have hydrogen bonding. None have hydrogen bonding. Water boils at 100 degree C and ethylene glycol boils at 197 degree C. Therefore at all temperatures water has a lower vapor pressure. at only some temperatures does water have a lower vapor pressure. ethylene glycol has more triple points than does water. at any given temperature the vapor pressure for water is greater than the vapor pressure for ethylene glycol. ethylene glycol has no hydrogen bonding. ethylene glycol has no critical point. As you squeeze snow in your gloved hands, what happens to the melting point: increases. decreases stays the same. What is it called at the place on a phase diagram where liquid, water, and solid are all in equilibrium? critical point triple point boiling point vapor pressure point.

Explanation / Answer

11)
ln [A] vs t is linear for 1st order reaction
the integrated rate law for 1st order reaction is:
ln [A] = –kt + ln [A]o
This is linear
Answer: A

12)
The pressure is always 1 atm in normal condition
the correct reason is that triple point lies above 1 atm
Answer: C

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