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3 years ago

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Which formula equation shows a reversible reaction?

2 answers:

timurjin [86]3 years ago

8 0

The question is incomplete, here is the complete question:

Which formula equation shows a reversible reaction?

A: $2Na+F_2\rightarrow 2NaF$

B: $CaCO_3\rightarrow CaO+CO_2$

C: $NH_4Cl(s)\rightleftharpoons 2NH_3(g)+HCl(g)$

D: $2H_2O_2(aq.)+Pt\rightarrow 2H_2O(l)+O_2(g)$

<u>Answer:</u> The reversible reaction is $NH_4Cl(s)\rightleftharpoons 2NH_3(g)+HCl(g)$

<u>Explanation:</u>

Reversible reaction is defined as the reaction in which the products formed react together to give the reactants back. For general reversible chemical equation:

$A+B\rightleftharpoons C+D$

Irreversible reaction is defined as the reaction in which the reactants only lead to products and the reaction do not proceed back. For general irreversible chemical reaction:

$A+B\rightarrow C+D$

For the given options:

The reaction having an equilibrium sign between the reactants and products is equation C.

Hence, the reversible reaction is $NH_4Cl(s)\rightleftharpoons 2NH_3(g)+HCl(g)$

pishuonlain [190]3 years ago

3 0

Answer:2NaF is the correct one. It’s a simple combination and can be be split with relative ease

Explanation:

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3 years ago

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Allushta [10]

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Explanation:

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2 years ago

The ratio of the specific heat of aluminum to the specific heat of iron is 2:1. How much energy must be transferred to the alumi

erastova [34]

Given what we know about ratios, we can confirm that in comparison to the iron pan, the aluminum pan will receive twice as much heat.

<h3>Why would the aluminum pan receive double the heat?</h3>

This has to do with the ratio being presented.
A ratio of 2:1 means that for every unit of heat to the iron, the aluminum receives 2.
In other words, the aluminum pan receives twice as much heat when compared to the iron pan.

Therefore, we can confirm that because the ratio of heat to the aluminum in comparison to the iron pan is 2:1, this means that for every 1 unit of heat to the iron pan, the aluminum pan will receive 2. This results in double the total heat received by the aluminum pan.

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brainly.com/question/1504221?referrer=searchResults

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2 years ago

4. Arrange the following substances in order of increasing boiling point: CH3CH2OH, HOCH2CH2OH, CH3CH2Cl , and ClCH2CH2OH A. CH3

Studentka2010 [4]

Answer: Option (B) is the correct answer.

Explanation:

A molecules that will have more number of hydrogen bonding will has highest boiling point because to break the hydrogen bonds high heat needs to be provided.

So, in the molecule $HOCH_{2}CH_{2}OH$ there is presence of two alcoholic groups. Hence, it will have strongest hydrogen bonding as compared to the rest of molecules.

In the molecule $ClCH_{2}CH_{2}OH$ there will be hydrogen bonding and dipole-dipole interactions. Hence, it boiling point will be slightly less than $HOCH_{2}CH_{2}OH$ .

In the molecule $CH_{3}CH_{2}OH$ , there will be only hydrogen bonding. Hence, its boiling point is less than $ClCH_{2}CH_{2}OH$ .

In the molecule $CH_{3}CH_{2}Cl$ , there is no hydrogen bonding but there will be only dipole-dipole interactions. Hence, its boiling point will be the least.

Therefore, we can conclude that increasing order of boiling point will be as follows.

$CH_{3}CH_{2}Cl$ < $CH_{3}CH_{2}OH$ < $ClCH_{2}CH_{2}OH$ < $HOCH_{2}CH_{2}OH$

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3 years ago

rodikova [14]

Answer:

Observe: To model how hydrogen and oxygen react to make water, type “H2+O2” into the Reactants box and “H2O” into the Products box.

As the equation is written, which element is not in balanced?

oxygen isn't balanced...

Explanation:

in reactants there is 2hydrogens and 2 oxygen

but in product there is balanced no if hydrogen bt there is only one no of oxygen

4 0

2 years ago