Chapter 2, Problem 136GQ

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Chapter
Section

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

# In the laboratory you combine 0.125 g of nickel with CO and isolate 0.364 g of Ni(CO)x. What is the value of x?

Interpretation Introduction

Interpretation: The value of x in the given compound Ni(CO)x has to be determined.

Concept introduction:

Moles: One mole is equivalent to the mass of the substance consists same number of units equal to the atoms present in 12g of 12C.

From given mass of substance moles could be calculated by using the following formula,

Molesofsubstance GivenmassofsubstanceMolecularmass

Explanation

Given,

0.125â€‰â€‰g Of nickel reacts with CO producing 0.364â€‰â€‰gâ€‰â€‰â€‰ofâ€‰â€‰â€‰Ni(CO)x

The number of moles of Ni can be calculated from its given mass as follows,

â€‚Â Â NumberÂ ofÂ molesÂ ofÂ Ni =â€‰â€‰0.12558.70â€‰â€‰g/mol =â€‰â€‰0.00123â€‰â€‰mol

The amount of CO present in the reaction = Amountâ€‰â€‰ofâ€‰â€‰productâ€‰â€‰âˆ’â€‰â€‰Amountâ€‰â€‰ofâ€‰â€‰Ni

Thus,

The amount of CO present in the reaction = 0.364â€‰gâ€‰-â€‰0.125â€‰â€‰gâ€‰â€‰=â€‰â€‰0.239â€‰â€‰g

â€‚Â NumberÂ ofÂ molesÂ ofÂ Â CO =â€‰â€‰0

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