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AleksandrR [38]
2 years ago
13

What volume of oxygen gas, in milliliters, is required to react with 0.640 g of SO2 gas at STP?

Chemistry
2 answers:
Elan Coil [88]2 years ago
5 0

Answer : The correct option is, 112 ml

Solution : Given,

Mass of SO_2 = 0.640 g

Molar mass of SO_2 = 64 g/mole

First we have to calculate the moles of SO_2.

\text{Moles of }SO_2=\frac{\text{Mass of }SO_2}{\text{Molar mass of }SO_2}=\frac{0.640g}{64g/mole}=0.01moles

Now we have to calculate the moles of oxygen gas.

The balanced chemical reaction will be,

2SO_2+O_2\rightarrow 2SO_3

From the reaction, we conclude that

As, 2 moles of SO_2 react with 1 mole of O_2 gas

So, 0.01 moles of SO_2 react with \frac{0.01}{2}=5\times 10^{-3} mole of O_2 gas

Now we have to calculate the volume of oxygen gas.

As, 1 mole of oxygen gas contains 22400 ml volume of oxygen gas

So, 5\times 10^{-3} mole of oxygen gas contains 22400ml\times (5\times 10^{-3})=112ml volume of oxygen gas

Therefore, the volume of oxygen gas is, 112 ml

IgorLugansk [536]2 years ago
4 0
SO2 + O2 ---> SO3. Moles of SO2 = 0.64/32+16X2 = 0.01mole. According to stoichiometry, moles of SO2 = moles of O2 = 0.01mol. Therefore volume of oxygen gas at STP = 22.4 x moles of O2 = 22.4 x 0.01 = 0.224 = 224mL. 
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Lynna [10]

0.5

Explanation:

Given parameters:

Mass of Ca²⁺ = 10g

unknown:

Equivalent weight = ?

Solution:

Equivalent weight that is the amount of electrons which a substance gains or loses per mole.

Ca²⁺ has +3 charge

It lost 2e⁻;

therefore;

  In 1 mole of  Ca²⁺, we have 2 equivalent weight

1 mol  Ca²⁺ = 2eq. wts. 

1 mol Ca x (40 g / 1 mol ) x (1 mol / 2 eq.wts.) = 20.0 g = 1 eq.wt. 

Therefore;

10.0 g  Ca²⁺ x (1 eq.wt. / 20.0 g) = 0.5 eq.wts.

learn more:

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lutik1710 [3]

Answer:

A non-polar liquid.

Explanation:

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On the other hand, polar (from dipole interactions) compounds can have general dipole-dipole interactions or hydrogen-bonding interactions (which is a special type of dipole-dipole interaction). H-bonding requires a Hydrogen bonded to either a Nitrogen, Oxygen, or Fluorine to do this. The main thing, is the non-polar ones don't have a dipole, and so they can't form a good intermolecular bond and evaporate quickly.

Water can H-bond, which is why it takes so long to dry and for it to evaporate in general. Nail polish, which is really a solution of acetone, has considerably weaker dipole-dipole bonds (compared to H-bonds), and evaporates quicker than water. Hope this helps!

Note: Figure taken from Chemistry: The Molecular Nature of Matter and Change 8th edition.

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