In a test, Rashi has to write the chemical equation for the formation of hydrochloric acid. She wrote

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

The teacher marked the answer wrong. Why is it so?

The equation is not balanced.

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

Hydrogen and chlorine do not react to form hydrochloric acid.

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

In this 2 atoms of chlorine were used instead of 1 molecule of chlorine.

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

In this 2 molecules of chlorine was used instead of 2 atoms of chlorine.

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

Open in App

Solution

The correct option is C
In this 2 atoms of chlorine were used instead of 1 molecule of chlorine.

The correct equation should be:

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

2Cl means 2 atoms of chlorine while $C l_{2}$ means 1 molecule of chlorine formed from 2 atoms.

Suggest Corrections

Similar questions

In a test, Rashi has to write the chemical equation for the formation of hydrochloric acid. She wrote

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

The teacher marked the answer wrong. Why is it so?

In a test, Rashi has to write the chemical equation for the formation of Hydrochloric acid. She wrote

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

The teacher marked the answer wrong. Why is it so?

Q. Which gas is given off when dilute hydrochloric acid is added to calcium carbonate?
How will you test the gas? Write the chemical equations for both reactions.

(a) What happens when dilute hydrochloric acid is added to sodium carbonate ? Write a balanced chemical equation of the reaction involved.

(b) Which gas is liberated when dilute hydrochloric acid reacts with sodium carbonate ? How will you test for the presence of this gas ?

Q. (a) Write a balanced chemical equation for the laboratory preparation of nitric acid.
(b) In the preparation of nitric acid from

K N O_{3}

, concentrated hydrochloric acid is not used in place of concentrated sulphuric acid. Explain why.
(c) Conc. nitric acid prepared in laboratory is yellow in colour. Why? How is this colour removed? [4 MARKS]

Join BYJU'S Learning Program

In a test, Rashi has to write the chemical equation for the formation of hydrochloric acid. She wrote H2+2Cl→2 HCl The teacher marked the answer wrong. Why is it so?

The correct option is C In this 2 atoms of chlorine were used instead of 1 molecule of chlorine. The correct equation should be: H2+Cl2→2 HCl 2Cl means 2 atoms of chlorine while Cl2 means 1 molecule of chlorine formed from 2 atoms.

In a test, Rashi has to write the chemical equation for the formation of hydrochloric acid. She wrote

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

The teacher marked the answer wrong. Why is it so?

The correct option is C
In this 2 atoms of chlorine were used instead of 1 molecule of chlorine.

The correct equation should be:

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

2Cl means 2 atoms of chlorine while $C l_{2}$ means 1 molecule of chlorine formed from 2 atoms.