GAS CLIC

KER QUIZ

WHICH OF THE POSSIBLE SUGGESTIONS BELOW BEST DESCRIBES HOW A GAS PRODUCES PRESSURE IN A CONTAINER?

A) A GAS PARTICLE MOVES IN STRAIGHT LINES.

B) THE GAS PARTICLES COLLIDE WITH THE WALLS OF THE CONTAINER.

C) THE PARTICLES OF THE GAS VIBRATE .

D) THE PARTICLES OF THE GAS ATTRACT EACH OTHER.

GAS PARTICLES COLLIDE WITH THE WALLS OF THE CONTAINER, CREATING PRESSURE. Answer: B

Standard

Pressure =

1.0 atm

101.3 kPa

760 mm Hg

CONVERT A PRESSURE OF 100.0 KPA TO ATM

A) 1.00 ATMB) 1.01 ATMC) 0.987 ATMD) 2.24 ATM

ANSWER: C

100.0 kPa = 0.987 ATM

BOYLE’S LAW

A) PRESSURE IS DIRECTLY PROPORTIONAL TO VOLUME at a constant temperature.

B) PRESSURE IS INVERSELY PROPORTIONAL TO VOLUME at a constant temperature

C) PRESSURE DOES NOT CHANGE WHEN THE VOLUME CHANGES

D) ALL OF THE ABOVE

WHAT IS THE SHAPE OF A PV CURVE AND ARE PRESSURE AND VOLUME INVERSELY OR DIRECTLY PROPORTIONAL TO EACH OTHER?

A) STRAIGHT LINE, DIRECT PROPORTION

B) A HYPERBOLA, INVERSE PROPORTION

C) STRAIGHT LINE, INVERSE D) A HYPERBOLA, DIRECT

BOYLE’S LAW – THE GRAPH IS A HYPERBOLA ANSWER B

TO INCREASE THE VOLUME OF A GAS AT CONSTANT TEMPERATURE FROM 2.00 LITERS TO 6.00 LITERS, IT IS NECESSARY TO CHANGE THE PRESSURE FROM 101.3 KPA TO:

A) 16.2 KPA B) 608 KPA

C) 33.8 KPA D) 304 KPA

Answer: C

IF YOUR LUNGS HOLD 6 LITERS OF GAS AT 3.00 ATM OF PRESSURE AND 25 C, CALCULATE THE VOLUME OF THE LUNGS AT 1.00 ATM AND 25 C.

A) 2 LITERSB) 6 LITERSC) 18 LITERSD) 22.4 LITERS

Answer: C

THE TEMPERATURE OF A GAS IS AN INDICATION OF:

A) THE AVERAGE KINETIC ENERGY OF THE GAS MOLECULES

B) THE CHEMICAL ENERGY OF THE GAS MOLECULES

C) THE TOTAL ENERGY OF THE GAS MOLECULES

D) THE AMOUNT OF SPACE BETWEEN THE GAS MOLECULES

Answer: A

THE LOWEST "POSSIBLE" TEMPERATURE IS

A) 0 C

B) -373 C

C) -273 C

D) -100 C

Answer: C ABSOLUTE ZERO!

CONVERT 25 C TO ABSOLUTE TEMPERATURE

A) 273 K

B) 298 K

C) 25 K

D) -273 K

ANSWER: B

A) directly proportionalB) inversely proportional

C) not relatedD) equal

ACCORDING TO JACQUES CHARLES, THE GUY WHO DETERMINED "CHARLES LAW", THE VOLUME AND THE TEMPERATURE OF A GAS ARE:

Answer: A in Kelvin temperature

The volume of a gas is directly proportional to its absolute temperature.

DIRECT PROPORTION BETWEEN ABSOLUTE TEMPERATURE AND VOLUME

TO CHANGE THE VOLUME OF A GAS AT CONSTANT PRESSURE FROM 2.0 LITERS TO 4.0 LITERS, IT IS NECESSARY TO CHANGE THE KELVIN TEMPERATURE FROM 200 K TO

A) 400 K B) 300 K

C) 100 K D) 0 K

Answer: A

WHEN A GAS IS HEATED AT A CONSTANT VOLUME, THE PRESSURE OF THE GAS INCREASES BECAUSE THE MOLECULES OF THE GAS:

A) EXPAND AND MOVE FASTER

B) MOVE FASTER, HITTING THE CONTAINER WITH A GREATER FORCE

C) REPEL EACH OTHER WITH A GREATER FORCE

D) BECOME MORE ACTIVE

Answer: B Pressure is directly proportional to tts absolute temperature.

REAL GASES TEND TO BEHAVE LIKE IDEAL GASES AT:

A) LOW TEMPERATURE AND LOW PRESSURESB) HIGH TEMPERATURE AND LOW PRESSURES

C) LOW TEMPERATURES AND HIGH PRESSURES D) HIGH TEMPERATURE AND HIGH PRESSURES

Answer: B. When a gas is at a low temperature and pressure, it condenses into a liquid.

FOR AN IDEAL GAS, WHICH VARIABLES ARE INVERSELY PROPORTIONAL TO EACH OTHER (IF ALL OTHER FACTORS REMAIN CONSTANT?)

A)P, V B) P, TC) V, T D) n, P

Answer: A

AT STP CONDITIONS, 2.0 LITERS OF HYDROGEN GAS HAS THE SAME NUMBER OF PARTICLES AS __________ LITER(S) OF HELIUM GAS.

A) 2.5 B) 2.0 C) 4.0D) 1.0

AVOGADRO’S PRINCIPLE: IF TWO GASES HAVE THE SAME VOLUME, TEMPERATURE, AND PRESSURE, THEN THEY WILL HAVE THE SAME NUMBER OF PARTICLES.

Answer: B

EQUAL VOLUMES OF AMMONIA AND NITROGEN GAS AT THE SAME TEMPERATURE AND PRESSURE WILL HAVE THE SAME

A. DENSITY B. NUMBER OF ATOMSC. NUMBER OF MOLECULESD. PERCENTAGE OF NITROGEN

Answer: C

CALCULATE THE DENSITY OF CARBON DIOXIDE, CO2, GAS AT STP CONDITIONS. NOTE: DENSITY = MASS/VOLUME

A) 1.96 GRAMS/LITER

B) 0.51 GRAMS/LITER

C) 22.4 GRAMS/LITER

D) 44.0 GRAMS/LITER

Answer: A

NITROGEN, N2, AND HYDROGEN, H2, GASES REACT TO PRODUCE AMMONIA GAS, NH3. IF 2.00 LITERS OF NITROGEN ARE MIXED WITH 4.00 LITERS OF HYDROGEN GAS AT STP, DETERMINE THE NUMBER OF LITERS OF AMMONIA GAS THAT COULD BE PRODUCED.

N2(G) + 3 H2(G) 2 NH3(G)

A) 1.33 LITERS B) 2.00 LITERS

C) 4.00 LITERS D) 2.67 LITERS Answer: D

AVOGADRO’S LAW OF COMBINING GAS VOLUMES: GASES AT THE SAME TEMPERATURE AND PRESSURE COMBINE IN WHOLE NUMBER RATIOS.

SOLID POTASSIUM CHLORATE, KCLO3, CAN BE HEATED AND DECOMPOSED INTO POTASSIUM CHLORIDE AND OXYGEN GAS. WRITE THE BALANCED CHEMICAL EQUATIONA) KCLO3 KCL + 3 O2

B)2 KCLO3 2 KCL + 3 O2

C) KCLO3 KCL + O2

D) KCLO3 KCL + 3 O

Answer: B

CALCULATE THE VOLUME OF OXYGEN GAS PRODUCED FROM THE DECOMPOSITION OF 1.22 GRAMS OF KCLO3 AT STP CONDITIONS

(FIND MOLES OF KCLO3 FIRST, THEN FIND MOLES OF OXYGEN, THEN FIND VOLUME AT STP CONDITIONS)

A) 0.336 LITERS B) 22.4 LITERS

C) 2.24 LITERS D) 3.20 LITERS

Answer: A

CALCULATE THE VOLUME OF 3.20 GRAMS OF OXYGEN GAS, O2 AT 1.00 ATM AND 25.0 C.USE THE IDEAL GAS LAW

A) 3.20 LITERSB) 2.24 LITERSC) 2.44 LITERSD) 4.88 LITERS

Answer: C