Question

w SnO2 + x H2 ----------> y Sn + z H2O

For which of the following values of w, x, y and z will the above equation be balanced?

1 . w=1, x=1, y=1, z=1
2. w=1, x=2, y=2, z=1
3. w=1, x=2, y=1, z=2
4.w=1, x=1, y=1, z=2

Answer 1

Answer:

option 3 is correct

Explanation:

by trial and hit method

it can done easily just start the number placing in the variable z . And check

you find the answer.

HOPE IT HELPS!!

Answer 2

The correct answer is option (3) w=1, x=2, y=1, z=2

EXPLANATION:

• Balancing a chemical equation signifies that that the law of conservation of mass is followed in any chemical equation.
• In doing so, the stoichiometry of the product and the reactant must be equal.
• In simpler terms, the number of atoms on the reactant side must be equal to the number of atoms on the product side of a chemical equation.
• The given chemical equation is as follows;

(w)SnO₂ + (x)H₂ ----------> (y) Sn + (z)H₂O

Where, w, x, y and z represent the stochiometric coeffiencts of the respective molecules.

• Balancing Oxygen, We can observe that the number of atoms of oxygen in recatant side is 1 whereas it is 1 on the product side.
• Therefore, multiplying by 2 with H₂O to balance the number of atoms of Oxygen.
• The reaction is -

(w)SnO₂ + (x)H₂ ----------> (y) Sn + (2)H₂O

• Multiplying H₂ by 2 to balance Hydrogen atoms.

• The reaction is-

(w)SnO₂ + 2H₂ ----------> (y) Sn + 2H₂O

• It can be noted that number of atoms of Sn on both the sides is same.
• Therefore, w and y is equal to one.

• The balanced reaction is as follows;

SnO₂ + 2H₂ ----------> Sn + 2H₂O

• Therefore, w = 1, x = 2, y = 1 and z = 2

Hence, Option (3) is correct.

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