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hoa [83]
3 years ago
9

What happens during a chemical reaction?

Chemistry
2 answers:
Svetradugi [14.3K]3 years ago
5 0

Answer: Option (a) is the correct answer.

Explanation:

A chemical reaction is defined as the reaction in which exchange of electrons take place between reactant molecules due to which bonds between reactant molecules are broken down.

This leads to the formation of new compounds known as products which occur due to formation of bonds.

For example, HCl + NaOH \rightarrow NaCl + H_{2}O

Here, bonds between HCl and NaOH are broken down and formation of NaCl and H_{2}O occur due to new bond formation.

Thus, we can conclude that during a chemical reaction the 'reactants' bonds break, and bonds of the products form.

frozen [14]3 years ago
3 0

Answer: The reactants’ bonds break, and bonds of the products form.

Explanation:

When a chemical reaction takes place, the bonds are broken and new bonds are formed to make new molecules. Like when 2 water molecules are broken down to form hydrogen and oxygen.

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Which list of symbols represents nonmetals, only?
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 The list  of symbols  that represents   non metal    is  P ,S , Cl (answer  4)


    Explanation

    Non metals   are   are  chemical  element  that   do   not have the characteristic   of the  metals.  for  example   ability to  conduct  electricity.

 List 4 elements that is P ( phosphorous),  S (sulfur)  and Cl (chlorine)  are non metals.

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6 0
3 years ago
CS2 (s) + 3 O2 (g) → CO2 (g) + 2 SO2 (g)
Natasha_Volkova [10]

Answer:

2.067 L ≅ 2.07 L.

Explanation:

  • The balanced equation for the mentioned reaction is:

<em>CS₂(g) + 3O₂(g) → CO₂(g) + 2SO₂(g),</em>

It is clear that 1.0 mole of CS₂ react with 3.0 mole of O₂ to produce 1.0 mole of CO₂ and 2.0 moles of SO₂.

  • At STP, 3.6 L of H₂ reacts with (?? L) of oxygen gas:

It is known that at STP: every 1.0 mol of any gas occupies 22.4 L.

<u><em>using cross multiplication:</em></u>

1.0 mol of O₂ represents → 22.4 L.

??? mol of O₂ represents → 3.1 L.

∴ 3.1 L of O₂ represents = (1.0 mol)(3.1 L)/(22.4 L) = 0.1384 mol.

  • To find the no. of moles of SO₂ produced from 3.1 liters (0.1384 mol) of hydrogen:

<u><em>Using cross multiplication:</em></u>

3.0 mol of O₂ produce → 2.0 mol of SO₂, from stichiometry.

0.1384 mol of O₂ produce → ??? mol of SO₂.

∴ The no. of moles of SO₂ = (2.0 mol)(0.1384 mol)/(3.0 mol) = 0.09227 mol.

  • Again, using cross multiplication:

1.0 mol of SO₂ represents → 22.4 L, at STP.

0.09227 mol of SO₂ represents → ??? L.

∴ The no. of liters of SO₂ will be produced = (0.09227 mol)(22.4 L)/(1.0 mol) = 2.067 L ≅ 2.07 L.

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