Answer: 7s
Explanation:
The order of the reaction is 2.
Integrated rate law for second order kinetic is determined using the formula
1/[At]=1/[Ao] +kt
But, [Ao] is the initial concentration = 1.50 mol/L
And [At] is the final concentration = 1/3 of initial concentration =1/3×1.5 = 0.5 mol/L
Rate constant, k = 0.2 L/mol*s
Using the formula
1/0.5=1/1.5+0.2t
Collecting like terms
1/0.5-1/1.5=0.2t
LCM = 1.5
3-1/1.5=0.2t
2/1.5=0.2t
Multiply both sides by 1/0.2
2/1.5×0.2=t
2/0.3=t
t=6.66s
t=7s
Answer:
B.evaporation hope it is helpful
Explanation:
it is evaporation because it is bwing heated
Answer:
441.28 g Oxygen
Explanation:
- The combustion of hydrogen gives water as the product.
- The equation for the reaction is;
2H₂(g) + O₂(g) → 2H₂O(l)
Mass of hydrogen = 55.6 g
Number of moles of hydrogen
Moles = Mass/Molar mass
= 55.6 g ÷ 2.016 g/mol
= 27.8 moles
The mole ratio of Hydrogen to Oxygen is 2:1
Therefore;
Number of moles of oxygen = 27.5794 moles ÷ 2
= 13.790 moles
Mass of oxygen gas will therefore be;
Mass = Number of moles × Molar mass
Molar mass of oxygen gas is 32 g/mol
Mass = 13.790 moles × 32 g/mol
<h3> = 441.28 g</h3><h3>Alternatively:</h3>
Mass of hydrogen + mass of oxygen = Mass of water
Therefore;
Mass of oxygen = Mass of water - mass of hydrogen
= 497 g - 55.6 g
<h3> = 441.4 g </h3>
As we know Benzene undergo
Electrophilic Substitution Reactions. In case of substituted Benzene the incoming Electrophile is substituted either at
<em>Orto , Para</em> position or
<em>Meta</em> position. If the substituent is
Electron Withdrawing in Nature then the Electrophile will go to <em>meta</em> position. When the substituent id
Electron Donating in Nature then the incoming electrophile will be directed to <em>ortho</em> and <em>para</em> position.
In Benzenesulfonic Acid the substituent is
Sulfonate (-SO₃H), it has a strong electron withdrawing effect. So on
Nitration the Nitro group will be oriented to <em>meta</em> position and
3-nitrobenzenesulfonic acid is formed. On further Nitration 3-nitrobenzenesulfonic acid will be convert to
<span>
3,5-dinitrobenzenesulfonic acid because both Sulfonate and Nitrate groups are <em>meta</em> directing.</span>