Question

What is the mass ratio for H20 to 02 in the reaction 2H2+02=2H2O

Answer 1

The mass ratio for H2O to O2 in the given reaction is 9 : 8

Step-by-step explanation

Given equation:

2H2 + O2 -----> 2H2O

What to find:

The mass ratio for H2O to O2 in the given reaction.

Solution:

The first step is to calculate the molar mass of H2O and O2.

From the periodic table, the atomic masses of (H = 1.0, O = 16.0)

So the mass of H2O in the reaction is 2(2 x 1 + 16) = 2(18) = 36.0 g

The mass of O2 in the reaction is (2 x 16) = 32.0 g

The final step is to determine the mass ratio for H2O to O2.

The mass ratio for H2O to water in the given reaction can be calculated as follows

`\frac{Mass\text{ }of\text{ }H_2O}{Mass\text{ }of\text{ }O_2}=(36.0g)/(32.0g)=(18)/(16)=(9)/(8)`

Therefore, the mass ratio for H2O to O2 in the given reaction is 9 : 8