Question

Q.1 Hydrogen burns in chlorine to produce hydrogen chloride. The ratio of masa
e) 1:35.5
(2013)
of reactants in chemical reaction H2 + Cl2 → 2HCl is
A) 2:35.5
B) 1:71
D) 2:70​

Answer 1

Answer:

D is the answer. Hope it helps

Answer 2

CORRECT QUESTION

Hydrogen burns in chlorine to produce hydrogen chloride. The ratio of masses of reactants in chemical reaction H₂ + Cl₂ → 2HCl is

A) 2:35.5

B) 1:71

C) 1.35.5

D) 2:70

ANSWER

The answer is 1:35.5

GIVEN

The reaction H₂ + Cl₂ → 2HCl

TO FIND

The ratio of the mass of the reactants.

SOLUTION

We can simply solve the above problem as follows;

We are given a reaction depicting burning of hydrogen in chlorine to form hydrogen chloride gas.

The reaction is as follows;

H₂ + Cl₂ -----------> 2HCl

We can observe that,

1 molecule of Hydrogen reacts with 1 molecule of Chloride.

Molecular weight of Hydrogen = 2 gram

Molecular weight of Chlorine = 2 × 35.5 = 71 grams

Ratio of mass of reactants = Mass of Hydrogen/mass of chlorine

= 2/71

= 1/35.5 = 1:35.5

Hence, The answer is 1:35.5

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