$C a O (s) + H_{2} O (l) \to C a (O H)_{2} (a q) + h e a t$

What can be inferred from the above reaction?

(i) $C a O$ is solid.

(ii) $C a O$ is reactive with water.

(iii) $H_{2} O$ is liquid.

(iv) $H_{2} O$ is in vapour state.

(v) $C a (O H)_{2}$ forms a solution with water

(vi) The reaction is exothermic.

(i), (iii), (iv), (vi)

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

(i), (ii), (iii), (v), (vi)

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

(ii), (iii), (v), (iv)

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

(v), (iv)

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

Open in App

Solution

The correct option is B
(i), (ii), (iii), (v), (vi)

The following are the conventions used for representing physical states in chemical equation.

(s) represents solid,

(l) represents liquid,

(g) represents gas,

(aq) represents solution in water.

$C a O (s) + H_{2} O (l) \to C a (O H)_{2} (a q)$ + heat

From the above equation, the following observations can be made.

(a) $C a O$ is solid

(b) $C a O$ and $H_{2} O$ reacts to produce product, So $C a O$ is reactive with water

(c) $H_{2} O$ is in liquid state and not vapour

(d) $C a (O H)_{2}$ forms a solution with water

(e) Heat is released in the reaction so it's an exothermic reaction.

Suggest Corrections

Similar questions

$C a O (s) + H_{2} O (l) \to C a (O H)_{2} (a q) + h e a t$

What can be inferred from the above reaction?

(i) $C a O$ is solid.

(ii) $C a O$ can react easily with water.

(iii) $H_{2} O$ is liquid.

(iv) $H_{2} O$ is in vapour state.

(v) $C a (O H)_{2}$ forms a solution with water

$CaO(s) + H_{2} O (l) \to {Ca(OH)}_{2} (aq) + Heat$

What can be inferred from the above reaction?

Which of the following are examples of combination reaction?

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

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

(iii) $M g O + C O_{2} \to M g C O_{3}$

(iv) $F e + S \to F e S$

(v) $2 A g C l + s u n l i g h t \to 2 A g + C l_{2}$

(vi) $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$

(vii) $N a_{2} O + H_{2} O \to 2 N a O H$

Which of the following are Molecules?

(i) O₂

(ii) Argon

(iii)Ammonia

(iv) Helium

(v) Water

(vi) Sugar

Which of the following are examples of combination reactions?

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

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

(iii) $M g O + C O_{2} \to M g C O_{3}$

(iv) $F e + S \to F e S$

(v) $2 A g C l + s u n l i g h t \to 2 A g + C l_{2}$

(vi) $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$

(vii) $N a_{2} O + H_{2} O \to 2 N a O H$

Join BYJU'S Learning Program