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Lana71 [14]
3 years ago
8

How many milliliters of 0.111 m hclo4 solution are needed to neutralize 50.00 ml of 0.0789 m naoh?

Chemistry
1 answer:
Lunna [17]3 years ago
3 0
HClO₄ is a strong acid and NaOH is a strong base. Therefore they completely dissociate in the solution.
NaOH + HClO₄ ---> NaClO₄ + H₂O
stoichiometry of acid to base is 1:1
amount of NaOH moles reacted - 0.0789 M / 1000 mL/L x 50.00 mL
                                                   = 0.00395 mol
Amount of HClO₄  moles reacted = 0.00395 mol
Molarity of HClO₄ is 0.111 M 
Volume of HClO₄ l containing 0.111 mol -  1 L
Therefore volume of HClO₄  containing 0.00395 mol- 1/0.111 x 0.00395 = 0.0356 L
Volume of HClO₄  - 35.6 mL  

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AysviL [449]

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where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

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T is the temperature of the gas in K.

  • At the same T and P and constant V (1.0 L), different gases have the same no. of moles (n):

<em>∴ (n) of CO₂ = (n) of C₂H₆</em>

<em></em>

∵ n = mass/molar mass

<em>∴ (mass/molar mass) of CO₂ = (mass/molar mass) of C₂H₆</em>

mass of CO₂ = 1.95 g, molar mass of CO₂ = 44.01 g/mol.

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<em>∴ mass of C₂H₆ = [(mass/molar mass) of CO₂]*(molar mass) of C₂H₆</em> = [(1.95 g / 44.01 g/mol)] * (30.07 g/mol) =<em> 1.332 g.</em>

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