IDNLearn.com connects you with a community of knowledgeable individuals ready to help. Discover reliable and timely information on any topic from our network of knowledgeable professionals.

1 mol of hydrogen gas and 1 mol of iodine vapour were mixed and allowed to react. After t seconds 0.8 mol of hydrogen remained.
The number of miles of hydrogen iodide formed at t seconds was..
A) 0.2
B) 0.4
C) 0.8
D) 1.6

The answer is B but please explain how you work this out?


Sagot :

At the beginning there was just 1 mole of hydrogen and 1 mole of iodin.
The reaction goes:
[tex]H_2+I_2\Rightarrow\ 2HI[/tex]
One mole of hydrogen goes with one mole of iodin, creating 2 moles of product.
If 0.8 of hydrogen remaind, it means that 1-0.8=0.2 reacted.
So:
1 mole H2 react with 1 mole I2 creating 2 moles of products.
So 0.2 of hydrogen reacted with 0.2 mole of iodin creating 0.4 moles.
[tex]1\ mole\ H_2\ ---\ 2\ moles\ HI\\ 0.2\ mole\ \ \ ---\ x\\ x=0.4[/tex]
We appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Thank you for choosing IDNLearn.com. We’re here to provide reliable answers, so please visit us again for more solutions.