Ch 3: Stoichiometry and the Combustion of Fuels

Question 1

bar

Answer 1

a unit of pressure. 1 bar = 100kPa

Question 2

gas constant

Answer 2

the constant, R, in the universal gas equation PV=nrt. R= 8.31J/K/mol where pressure is measured in kPa, volume in L, temp in K

Question 3

ideal gas

Answer 3

a gas which obeys the universal gas equation at all temps and pressures

Question 4

kelvin scale

Answer 4

absolute temp scale. deg K= deg C + 273

Question 5

pascal

Answer 5

unit of pressure equal to 1 newton per square metre where pressure= force/area

Question 6

pressure

Answer 6

the force exerted per unit area of a surface

Question 7

standard atmosphere

Answer 7

one standard atmosphere (1 atm) is the pressure required to support 760 mm of mercury (760 mm Hg) in a mercury barometer at 25 degrees C. 1 atm is approx the pressure experienced at sea level

Question 8

standard conditons

Answer 8

standard reference conditions to compare testing of experimental activities. gas pressure is 100kPa (1 bar), temp is 25 deg C (298 K) and conc of any dissolved species is 0.1 M.

Question 9

standard lab conditions (SLC)

Answer 9

conditions at which gas pressure is 100kPa (1 bar), temp is 25 deg C (298 K). one mole of an ideal gas at SLC has a volume of 24.8 L

Question 10

standard temperature and pressure (STP)

Answer 10

conditions at which gas pressure is 100 kPa, temp is 25 deg C, one mole of an ideal gas at SLC has a volume of 22.7 L

Question 11

universal gas equation

Answer 11

PV=nRT which is the equation which describes the behavior of an ideal gas