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Alex Ar [27]
3 years ago
7

Label each reactant in the reaction below as a proton donor or a proton acceptor and as acidic or basic H2Co3 +H20---------HC0-3

+h30+
Chemistry
1 answer:
OLga [1]3 years ago
5 0

Answer:

Proton donor - H2CO3

Proton acceptor - H2O

Explanation:

The balanced reaction is

H2CO3 +H2O---------HCO3 - + h3O+

Here, water molecule i.e H2O has one additional H + ion hence it has accepted the hydrogen atom.

This additional hydrogen atom has been donated by H2CO3 thereby reducing itself to HCO3-

Hence,

Proton donor - H2CO3

Proton acceptor - H2O

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9. Calculate the standard enthalpy of the 3rd reaction using the given data: A,H° = +52.96 kJ/mol AFH= -483.64 kJ/mol H2s)+I202
Mice21 [21]

Answer:

-586.56 kJ/mol is the standard enthalpy of the 3rd reaction.

Explanation:

H_2(g) +I_2(s) \rightarrow 2 HI(g) ,\Delta H^{o}_{1}= +52.96 kJ/mol...[1]

2 H_2(g) + O_2(g)\rightarrow 2 H_2O(g),\Delta H^{o}_{2}=-483.64 kJ/mol...[2]

4 HI(g)+O_2(g)\rightarrow 2 I_2(s)+2 H_2O(g) ,\Delta H^{o}_{3} =?..[3]

The unknown standard enthalpy of third reaction can be calculated by using Hess's law:

The law states that 'the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps'.

[2] - 2 × [1] = [3]

O_2+4HI\rightarrow 2H_2O(g)+2I_2(s)

\Delta H^{o}_{3}=\Delta H^{o}_{2}-2\times \Delta H^{o}_{1}

=-483.64 kJ/mol - 2\times (52.96 kJ/mol)=-586.56 kJ/mol

The standard enthalpy of the 3rd reaction is -586.56 kJ/mol.The negative sign indicates that energy is released during this reaction.

6 0
4 years ago
A water bottling company is looking to achieve maximum production from the following reversible reaction. If the reaction has re
dybincka [34]

Answer:

Remove the already produced water and allow the reaction to reach equilibrium again.

Explanation:

<em>According to Le Chatelier principle, when a reaction is in equilibrium and one of the factors that influence the rate of reaction is altered, the equilibrium will shift so as to annul the effects of the change.</em>

If the product is continuously being removed from a reaction that is in equilibrium, more product will continued to be formed in another to annul the effect of reduction in the concentration of product.

Hence, in order to maximize production of water in the reaction, the product (water) needs to be removed and the reaction allowed to reach equilibrium again.

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What is the chemical formula for nitrogen monoxide?
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Based on results of his study of atomic x-ray spectra, Moseley discovered a relationship that replaced atomic mass as the criter
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Answer: In the periodic table the elements are arranged in order of increasing atomic number/ atomic mass from left to right in the periodic table.

Explanation:

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