______________ CHAPTER 12 REVIEW ACTIVITY ., ..,;... 13oyle's Law According to Boyle's law, the product of the pressure (P) and volume (V) of a fixed mass of gas at constant temperature is a co115tant (K). for readings The following table contains pairs of pressure and volume • • • a. gas under such conditions.. For each pair of readings, multiply P x V to find the value of K. Pressure (kPa) Volume (cm') {kPa x· cm') 1. 20.0 60.0 ? 1. 2. 30.0 40.0 _?_ 2; 3. 40.0 30.0 ? 3. 4. 60.0 20.0 1 4. 5. 100.0 12.0 _?_ 5. 6. 200,0 6.00 ? 6. 1. 300.0 4.00 ? 7. 400.0 3.00 1 8. s. :9. Now plot on the following grid the values of P and V from the table above. Connect the points with a smooth cwve. 60 50 V<>lume (cm') ' 40 30 20 10 100 400 300 200 Pressure (kPa) 500 600 10. What is the name of the kind of cwve you have driiwn?. 10. CHAPTER 12 REVIEW ACTIVITY Charles's Law Accordin8 to. Charles'& law, the volume of a .llxed mus of pa varies � wir,b lta kelvin t.emperatllnl if Its PJ'NIUH ,la COllltlllt, T,l.e following table contains Celslua temperature ilncl volume rudlnp for a pa under such conditions. Recall that K=°C+273. ' convert Heh CelliUI temperature·to kelvins. . T.....,81'1,_ ("Q Tem,.,ltllre (IO voiilllle•(an') -150 ? 100 1, 1. ,., ,., :a. -100 7 8. -so ?, 0 ? 222 5. so ? 263 a. 8. 100 ? 30J 0. 150 ? 344 'I. ,. r. Ill. .. 8. 4001--+---,l---+---1--� 3001f---+---1---4--�----J.200,r--+---r--J-----4------L- 1oor----+--+---l----l---l- .. : ... 100 ZOO . . , 300 • • 400 ·�.cure (IC) 111• What i& the llhape of the graph )'OU have drawn? 500 ..._ ·• 8. ·Now plot on the following llrid t.he values of T (In kelvlna) and V Irom the table above, and connect the points. �ume (cm') � .. • Combined Gas Law Problems Solve these problems. 1. If 10.0L of CO2 at 300kPa is injected Into a 20L tank heated from 300K to 400K, what Is the new pressure? (200 kPa) 2. A 25l sample of Ar gas at STP is depressurized to SOkPa and cooled to 100K. What is the new volume of the gas? (18.55 L) 3. If the volume of a 7L tank at STP is doubled and the temperature is cut In half, what is the new pressure? (25.JkPa) 4. If a 25L tank of a gas at 200kPa and 300K Is heated to 400K and the volume doubles, what is the new pressure? (133.3 kPa) 5. What Is the temperature of a 2L tank of gas at STP when the volume and pressure double? (1092 K)

Combined Gas Law Problems

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