In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

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

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

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

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

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Solution

The correct option is C
$2 H_{2} (g) + O_{2} (g) \to 2 H_{2} O (l)$

Explanation of the correct option:
Option C:
The reaction of Hydrogen gas $(H_{2})$ and Oxygen gas $(O_{2})$ gives the product water $(H_{2} O)$ which exists in the liquid state.
The equation can be written as:
$2 H_{2} (g) + O_{2} (g) \to 2 H_{2} O (l)$ .
Explanation of the incorrect options:
This reaction does not exist as we can get water in liquid form when we take hydrogen and oxygen in gas form.
In options A, B, and D, the phases of the reactions are different.
Hence, Option C is correct.

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Similar questions

Q. Question 17
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

(a)

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

(b)

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

(c)

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

(d)

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

A chemical equation is the shorthand form of representing a chemical reaction using the _______________(names/symbols or formulae) of the reactants and products.

Q. When the solution of substance X is added to a solution of potassium iodide, then a yellow solid separates out from the solution.
(a) What do you think substance X is likely to be?
(b) Name the substance which the yellow solid consists of.
(c) Which characteristic of chemical reaction is illustrated by this example?
(d) Write a balanced chemical equation for the reaction which takes place. Mention the physical states of all the reactants and products involved in the chemical equation.

In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

In which of the following chemical equations, do the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

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