The given below equation is an example of a balanced chemical equation.

$Z n + H C l \to Z n C l_{2} + H_{2}$

True

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False

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Solution

The correct option is B
False

The above equation is not a balanced as the number of the chlorine atom and the hydrogen atom are not equal on the RHS and LHS.

The balanced equation will be:

$Z n + 2 H C l \to Z n C l_{2} + H_{2}$

Now in this equation, the number of zinc, chlorine and hydrogen atoms are balanced on both the LHS and RHS.

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The chemical equation given below is balanced.

$H_{2} + C l_{2} \to H C l$

$C a O + H_{2} O \to C a (O H)_{2}$ is an example of a balanced chemical equation.

Q. (a) Explain, with example, how the physical states of the reactants and products can be shown in a chemical equation.
(b) Balance the following equation and add state symbols:

Zn + HCl \underset{}{\to} {ZnCl}_{2} + H_{2}

(c) Convey the following information in the form of a balanced chemical equation:
"An aqueous solution of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution."

(a) Explain, with example, how the physical states of the reactants and products can be shown in a chemical equation.

(b) Balance the following equation and add state symbols :

$Z n + H C l ⟶ Z n C l_{2} + H_{2}$

"An aqueous solution of ferrous sulphate reacts with ans aqueous solution of sodium hydroxide to form aPrecipitate of ferrous hydroxide and sodium sulphate remains in solution."

Q. Balance the chemical equation given below and identify the coefficients of HCl and Cl

_{2}

respectively.

K_{2} C r_{2} O_{7} + H C l

\to K C l + C r C l_{3} + H_{2} O + C l_{2}

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The given below equation is an example of a balanced chemical equation. Zn+HCl→ZnCl2+H2

The given below equation is an example of a balanced chemical equation.

$Z n + H C l \to Z n C l_{2} + H_{2}$