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ankoles [38]
2 years ago
10

What volume of ammonia gas, measured at 547.9 mmHg and 27.6oC, is required to produce 8.98 g of ammonium sulfate according to th

e following balanced chemical equation? 2NH3(g) + H2SO4(aq) → (NH4)2SO4(s)
Chemistry
2 answers:
erma4kov [3.2K]2 years ago
8 0

Answer:

4.66 L of ammonia gas will be produced

Explanation:

Step 1: Data given

The pressure of ammonia gas = 547.9 mmHg = 0.72092116 atm

Temperature = 27.6 °C = 300.75 K

Mass of ammonium sulfate produced = 8.98 gramms

Molar mass of ammonium sulfate = 132.14 g/mol

Step 2: The balanced equation

2NH3(g) + H2SO4(aq) → (NH4)2SO4(s)

Step 3: Calculate moles (NH4)2SO4

Moles (NH4)2SO4 = mass (NH4)2SO4 / molar mass

Moles (NH4)2SO4 = 8.98 grams / 132.14 g/mol

Moles (NH4)2SO4 = 0.0680 moles

Step 4: Calculate moles NH3

For 1 mol (NH4)2SO4 we need 2 moles NH3

For 0.0680 moles (NH4)2SO4 we need 2*0.0680 = 0.136 moles NH3

Step 5: Calculate volume NH4

p*V=n*R*T

V = (n*R*T)/p

⇒with V = the volume of NH3 = TO BE DETERMINED

⇒with n = the number of moles NH3 = 0.136 moles NH3

⇒with R = the gas constant = 0.08206 L*atm/mol*K

⇒with T = the temperature = 300.75 K

⇒with p = the pressure of the gas = 0.72092116 atm

V = (0.136 * 0.08206 * 300.75) / 0.72092116

V = 4.66 L

4.66 L of ammonia gas will be produced

Studentka2010 [4]2 years ago
4 0

Answer:

4.65 L of NH₃ is required for the reaction

Explanation:

2NH₃(g)  +  H₂SO₄(aq)  → (NH₄)₂SO₄(s)

We determine the ammonium sulfate's moles that have been formed.

8.98 g . 1mol / 132.06 g = 0.068 moles

Now, we propose this rule of three:

1 mol of ammonium sulfate can be produced by 2 moles of ammonia

Therefore, 0.068 moles of salt were produced by (0.068 . 29) / 1 = 0.136 moles of NH₃. We apply the Ideal Gases Law, to determine the volume.

Firstly we do unit's conversions:

27.6°C +273 =  300.6 K

547.9 mmHg . 1 atm / 760 mmHg = 0.721 atm

V = ( n . R . T ) / P → (0.136 mol . 0.082 L.atm/mol.K . 300.6K) / 0.721 atm

V = 4.65 L

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ziro4ka [17]

Question is incomplete, complete question is as follows :

Complete Question : .Sulfonation of benzene has the following mechanism:

(1) 2 H2SO4 ⇌ H3O+ + HSO4− + SO3

[fast]

(2) SO3 + C6H6 → H(C6H5+)SO3−

[slow]

(3) H(C6H5+)SO3− + HSO4− → C6H5SO3− + H2SO4

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Frist of all, all the common terms are cancelled out and written the overall reaction.

As we know that the rate depednant step is the slowest step of the reaction, rate law is :

                        rate = k_{2} [SO_{3}][C_{6}H_{6}]

But the problem is that SO3 cannot be written in the overall rate law because it is an intermediate.

Rate law for synthesis of S03 is as follows :

                       rate = k_{1}[H_{2}SO_{4}]^{2}

Hence when we substitute equation 2 in equation one,

                   Rate comes out to be =  k_{overall} [H_{2}SO_{4}]^{2} [C_{6}H_{6}]

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