Chemistry: How many moles of h2o will be produced from 42.0g of h2o2

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How many moles of h2o will be produced from 42.0g

alexandergonzalez38

31.05.2020

Answer : The number of moles of water will be, 1.235 moles

Solution : Given,

Mass of H_2O_2 = 42 grams

Molar mass of H_2O_2 = 34 g/mole

First we have to calculate the moles of H_2O_2

$\text{Moles of }H_2O_2=\frac{\text{Mass of }H_2O_2}{\text{Molar mass of }H_2O_2}=\frac{42g}{34g/mole}=1.235moles$

Now we have to calculate the moles of water.

The balanced chemical reaction will be,

$2H_2O_2\rightarrow 2H_2O+O_2$

From the balanced reaction, we conclude that

As, 2 moles of H_2O_2 decomposes to give 2 moles of water

So, 1.235 moles of H_2O_2 decomposes to give 1.235 moles of water

Therefore, the number of moles of water will be, 1.235 moles

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