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3 years ago

PLEASE HELP!!! NEED TO PASS FIRST SEMESTER!

Chemistry

2 answers:

Pani-rosa [81]3 years ago

6 0

Answer :

Reaction 1 :

This reaction is a balanced chemical reaction and it is an acid-base reaction.

Reaction 2 :

This reaction is an balanced chemical reaction and it is an double-displacement reaction.

The balanced chemical reaction will be,

$CaCl_2(aq)+2NaHCO_3(aq)\rightarrow CO_2(g)+CaCO_3(aq)+2NaCl(aq)+H_2O(l)$

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

Reaction 1 :

The given chemical reaction is,

$CH_3COOH(aq)+NaHCO_3(s)\rightarrow CO_2(g)+H_2O(l)+Na^+(aq)+CH_3COO^-(aq)$

This reaction is a balanced chemical reaction because in this reaction the number of atoms of individual elements present on reactant side are equal to the product side.

This reaction is acid-base reaction in which an acid react with a base to give salt and water as a product.

Reaction 2 :

The given chemical reaction is,

$CaCl_2(aq)+NaHCO_3(aq)\rightarrow CO_2(g)+CaCO_3(aq)+NaCl(aq)+H_2O(l)$

This reaction is an unbalanced chemical reaction because in this reaction number of chlorine, hydrogen and oxygen atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the $NaHCO_3\text{ and }NaCl$ and we get the balanced chemical equation.

The balanced chemical reaction will be,

$CaCl_2(aq)+2NaHCO_3(aq)\rightarrow CO_2(g)+CaCO_3(aq)+2NaCl(aq)+H_2O(l)$

This reaction is a double-displacement reaction in which the cation of two reactants molecule exchange their places to give two different products.

ohaa [14]3 years ago

5 0

Answer: Thr reactions are balanced because both have the same products so they are balanced. This represents a balanced graph

Explanation:

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shepuryov [24]

We use the MO diagram for a homonuclear diatomic species (since C and N are neighbours, we treat them as the "same").

The first two electrons contribute to bonding. The next two are anti-bonding.

The next six contribute to bonding, and the following six are anti-bonding.

So, if we start with CN+, which has 4+5-1 (8) valence electrons, we note that the first two electrons contribute to bonding, while the next two cancel this out; the next four contribute to bonding, so the bond order is 4/2 = 2.

If we add one more electron to get CN, there are now 5 bonding electrons, giving bond order 5/2=2.5.

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stellarik [79]

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Answer:

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