Question

How many moles of water can be obtained from the reaction of 4 moles of O2?

Answer 1

Using the balanced chemical equation 2 H2(g) + O2(g) → 2 H2O(g), we determine that 4 moles of oxygen gas would produce 8 moles of water, as the molar ratio of oxygen to water is 1:2.

Step-by-step explanation:

To determine how many moles of water can be obtained from the reaction of 4 moles of O2, we need to refer to the balanced chemical equation for the reaction between hydrogen and oxygen to form water:

2 H₂(g) + O₂(g) → 2 H₂O(g)

This equation tells us that 1 mole of oxygen (O₂) reacts with 2 moles of hydrogen (H₂) to produce 2 moles of water (H₂O). Therefore, if we have 4 moles of oxygen, it will produce 2 times the amount of water, since the mole ratio of O₂ to H₂O is 1:2.

So, the calculation is:

• 4 moles of oxygen x 2 moles of water/mole of oxygen = 8 moles of water

Thus, 8 moles of water can be produced from 4 moles of O₂.

Answer 2

Answer: 8moles

Step-by-step explanation:

The reaction below shows the formation of 2 moles of water from 2 moles of hydrogen and 1 mole of oxygen respectively.

2H2(g) + O2 (g) --> 2H2O(l)

So, if 1 mole of O2 produce 2 mole of H2O

4 moles of O2 will produce Z mole of H2O

To get the value of Z, cross multiply

1 x Z = 4 x 2

Z = 8

So, the equation will be 8H2(g) + 4O2 (g) --> 8H2O(l)

Thus, 4 moles of O2 will produce 8moles of H2O .