Answer:
78.87 liters of bromine gas at 300 °C and 735 Torr are formed.
Explanation:
Moles of sodium bromide =
Moles of sodium bromate =
According to reaction , 1 mol of sodium bromate reacts with 5 moles of sodium bromide. Then 1.1655 mol of sodium bromate will react with:
of sodium bromide.
This means that sodium bromide is in limiting amount the amount of bromine gas depends upon sodium bromide.
According to reaction 5 moles of sodium bromide gives 3 moles of bromine gas.
Then 2.6699 moles of sodium bromide will give:
of bromine gas
Volume occupied by bromine gas at 300 °C and 735 Torr.
Pressure of the gas = P =735 Torr = 0.9555 atm
Temperature of the gas = T = 300°C = 573 K
n = 1.60194 mol
V = 78.87 L
78.87 liters of bromine gas at 300 °C and 735 Torr are formed.
Explanation:
to see how a change in a reactant concentration would affect the speed of the chemical reaction
Answer:
49902.4 g/mol.
Explanation:
Using ideal gas equation,
PV = nRT
Where,
P = pressure
= 0.00144 atm
V = volume
= 0.01 l
T = absolute temperature
= 273 + 23.5
= 296.5 K
R = gas constant
= 0.0821 atm.l/K.mol
n = number of moles
n = (0.00144 * 0.01)/0.0821 * 296.5
= 5.92 x 10^-7 mol.
Molar mass = mass/number of moles
= 0.02952/5.92 x 10^-7
= 49902.4 g/mol.
Answer:
The mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882
Explanation:
We are given that
Aqueous solution that contains 22.9% NaOH by mass means
22.9 g NaOH in 100 g solution.
Mass of NaOH(WB)=22.9 g
Mass of water =100-22.9=77.1
Na=23
O=16
H=1.01
Molar mass of NaOH(MB)=23+16+1.01=40.01
Number of moles =
Using the formula
Number of moles of NaOH
Molar mass of water=16+2(1.01)=18.02g
Number of moles of water
Now, mole fraction of NaOH
=
=0.882
Hence, the mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882
Partial pressure is the pressure that is exerted by individual gases.
Partial pressure is calculated as the product of total pressure by the mole fraction of the corresponding gas.
pressures exerted by gases are in three different units, therefore we can convert them all into a common unit - torr
1 - 0.845 atm - 0.854 atm x 760 Torr/atm = 642 torr
2 - 120 torr
3 - 210 mmHg - 1 mmhg is almost equivalent to 1 torr - therefore its 210 torr
total pressure - 642 + 120 + 210 = 972 torr
answer is 972 torr