Balance the following equation and add the state symbols : Zn(s) + 2HCl(aq) → ZnCl2 + H2

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Solution

The equation is already balanced.
ZnCl₂ is in aqueous (aq) state while H₂ is in gaseous (g) state.

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Q. For,

Z n (s) + 2 H C l (a q) ⇌ Z n C l_{2} (a q) + H_{2} (g)

what will be the expression of

K_{c}

Balance the following equations :

(a) $N_{2} + H_{2} \to N H_{3}$

(b) $H_{2} + O_{2} \to H_{2} O$

(d) $C O + O_{2} \to C O_{2}$

(e) $Z n + H C I \to Z n C l_{2} + H_{2}$

Complete and balance the following equations :

(a) $H_{2} + \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot \to 2 H C l$

(b) $H_{2} + S \to \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot$

(d) $C u o + \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot \to C u + \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot$

(e) $F e + H_{2} O \to + \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot$

(f) $K + H_{2} O \to \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot + \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot$

(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."

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

In the above equation, the value of X is:

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Balance the following equation and add the state symbols : Zn(s) + 2HCl(aq) → ZnCl2 + H2

The equation is already balanced. ZnCl​2 is in aqueous (aq) state while H2 is in gaseous (g) state.

The equation is already balanced.
ZnCl₂ is in aqueous (aq) state while H₂ is in gaseous (g) state.