Chemistry 11

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What is the value of the gas constant ?

0.0821 L*atm/mol*K

R =

0.0821 atmL/molK

In the reaction 2H2(g) + O2(g) = 2H2O(g), the volume ratio of H2 to H2O is

1 : 1

kPa

101.3

Pa

101300

psi

14.7

In the equation H2(g) + CI2(g) = 2HCI(g), one volume of hydrogen yields how many volumes of hydrogen chloride ?

2

The standard molar volume of a gas at STP is all of te following except

22.4 g.

C3H4

40

mmHg

760

torr

760

K =

C + 273

Volume of gaseous reactants and products in a chemical reaction can be expressed as ratios of small whole numbers

Constant temperature and pressure are maintained

The two samples must have equal masses. True or False ?

False

For the expression V = nRT/P, which of the following choices will cause the volume to increase ?

Increase T

Which is common unit for the ideal gas constant R ?

L*atm/mol*K

Amount

N=p*v/r*t

At constant temperature and pressure, gas volume is directly proportional to the

Number of moles of gas

Pressure

P = n*r*t/v

All of the following equations are statements of the ideal gas law except

P = nRTV

Ideal Gas Law

PV=nRT

Temperature

T=p*v/n*r

The two flasks must contain an equal number of molecules. True or False ?

True

Volume

V = n*r*t/p

At constant temperature ad pressure, the volumes of gaseous reactants and products can be expressed

as ratios of small whole numbers

The volume of a gas is directly proportional to the number of moles of that gas if

both the pressure and temperature remain constant

According to Avogrado's law, 1 L of H2(g) and L of O2(g) at the same temperature and pressure

contain equal numbers of molecules

Avogrado's Law

equal volumes of gases at the same temperature and pressure contain equal numbers of molecules

The law to combining volumes applies only to gas volumes

measured at constant temperature only to gas volume

R=

p*v/n*t

N =

p*v/r*t

In the expression V = kn, n represents

the number of moles of gas

Avogrado's principle led to the realization that the molecules of some substances

were made of more than one atom


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