Which of these chemical equations is not balanced-2Mg -s- - O-2 -g- - 2MgO -s-CO-2 -g- - 6H-2O -l- - C-6H-12O-6 -s- - 6O-2 -g-CaCO-3 -s- - CaO -s- - CO-2 -g-CuCl-2 -aq- - Pb -NO-3-2-aq- - Cu-NO-3-2 -aq- - PbCl-2 -g-

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Mole Concept in Balanced Reaction

Which of thes...

Question

Which of these chemical equations is not balanced?

$2 M g (s) + O_{2} (g) \to 2 M g O (s)$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$C O_{2} (g) + 6 H_{2} O (l) \to C_{6} H_{12} O_{6} (s) + 6 O_{2} (g)$

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

$C u C l_{2} (a q) + P b (N O_{3})_{2} (a q) \to C u (N O_{3})_{2} (a q) + P b C l_{2} (g)$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$C a C O_{3} (s) \to C a O (s) + C O_{2} (g)$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
$C O_{2} (g) + 6 H_{2} O (l) \to C_{6} H_{12} O_{6} (s) + 6 O_{2} (g)$

In an unbalanced chemical equation, the number of atoms of each element on either side of the arrow i.e. on the reactant and product side is not equal.
If you count the number of atoms for equations given in options then we have the equal number atoms of each element on reactant and product side except for one reaction. We don't have the equal number of atoms on the reactant and product side for the reaction given below:

${CO}_{2} (g) + 6 H_{2} O (l) \to C_{6} H_{12} O_{6} (s) + 6 O_{2} (g)$

Clearly, number of carbon and oxygen atoms on the reactant side is not equal to that in the product side.
The balanced chemical equation would be:

$6 {CO}_{2} (g) + 6 H_{2} O (l) \to C_{6} H_{12} O_{6} (s) + 6 O_{2} (g)$

Suggest Corrections

Similar questions

Q. Which of the following is not an endothermic reaction?
(a)

{CaCO}_{3} \underset{}{\to} CaO + {CO}_{2}

(b)

2 H_{2} O \underset{}{\to} 2 H_{2} + O_{2}

(c)

6 {CO}_{2} + 6 H_{2} O \underset{}{\to} C_{6} H_{12} O_{6} + 6 O_{2}

(d)

C_{6} H_{12} O_{6} + 6 O_{2} \underset{}{\to} 6 {CO}_{2} + 6 H_{2} O

Consider the reactions:

(a) 6 CO₂(g) + 6H₂O(l) → C₆ H₁₂ O₆(aq) + 6O₂(g)

(b) O₃(g) + H₂O₂(l) → H₂O(l) + 2O₂(g)

Why it is more appropriate to write these reactions as:

(a) 6CO₂(g) + 12H₂O(l) → C₆ H₁₂ O₆(aq) + 6H₂O(l) + 6O₂(g)

(b) O₃(g) + H₂O₂ (l) → H₂O(l) + O₂(g) + O₂(g)

Also suggest a technique to investigate the path of the above (a) and (b) redox

reactions.

Q. Balance the following chemical equations and identify the type of chemical reaction.

(a)

Mg(s) + {Cl}_{2} (g) \to {MgCl}_{2} (s)

(b)

HgO(s) Heat - - \to Hg(l) + O_{2} (g)

(c)

Na(s) + S(s) Fuse - - \to {Na}_{2} S(s)

(d)

{TiCl}_{4} (l) + Mg(s) \to Ti(s) + {MgCl}_{2} (s)

(e)

CaO(s) + {SiO}_{2} (s) \to {CaSiO}_{3} (s)

(f)

H_{2} O_{2} (l) UV - - \to H_{2} O(l) + O_{2} (g)

Question 35
Balance the following chemical equations and identify the type of chemical reaction.
(a) Mg(s)+Cl2(g)→MgCl2(s)
(b) HgO(s)Heat−−→Hg(l)+O2(g)
(c) Na(s)+S(s)Fuse−−→Na2S(s)
(d) TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s)
(e) CaO(s)+SiO2(s)→CaSiO3(s)
(f) H2O2(l)UV−−→H2O(l)+O2(g)

Which of these chemical equations is not balanced?

Join BYJU'S Learning Program