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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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Dinitrogen pentoxide is used in the preparation of explosives. If 7.93 mol of

Tpy6a [65]

The volume of O₂ produced: 84.6 L

<h3>Further explanation</h3>

Given

7.93 mol of dinitrogen pentoxide

T = 48 + 273 = 321 K

P = 125 kPa = 1,23365 atm

Required

Volume of O₂

Solution

Decomposition reaction of dinitrogen pentoxide

2N₂O₅(g)→4NO₂(g)+O₂ (g)

From the equation, mol ratio N₂O₅ : O₂ = 2 : 1, so mol O₂ :

= 0.5 x mol N₂O₅

= 0.5 x 7.93

= 3.965 moles

The volume of O₂ :

$\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{3.965\times 0.082\times 321}{1.23365}\\\\V=84.6~L$

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Answer:

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Explanation:

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Determine whether the variable is qualitative or quantitative. grams of carbohydrates in a donut. grams of carbohydrates in a do

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madam [21]

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Osmotic pressure Π is given by the relation:Π = iMRTwhere i is the van’t Hoff factor, M is the concentration of solute, R is the

lions [1.4K]

<u>Answer:</u> The concentration of solute is 0.503 mol/L

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=icRT$

where,

$\pi$ = osmotic pressure of the solution = 24 atm

i = Van't hoff factor = 2 (for NaCl)

c = concentration of solute = ?

R = Gas constant = $0.08\text{ L atm }mol^{-1}K^{-1}$

T = temperature of the solution = $25^oC=[273+25]=298K$

Putting values in above equation, we get:

$24atm=2\times c\times 0.08\text{ L.atm }mol^{-1}K^{-1}\times 298K\\\\c=0.503mol/L$

Hence, the concentration of solute is 0.503 mol/L

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3 years ago