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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

NTA Abhyas 2020 · Chemistry · General Principles and Processes of Isolation of Metals

In Mond's process for refining of nickel, the following reactions...

In Mond's process for refining of nickel, the following reactions occur. The value of

'x'

is ______.

\text{Ni}\text{+}\text{xCO}\overset{\text{330}\text{K}\text{-}\text{350}\text{K}}{\to} \text{Ni}{\left(\text{CO}\right)}_{\text{x}} \overset{\text{450}\text{K}\text{-}\text{407}\text{K}}{\to} {\text{Ni}}_{\left(\text{s}\right)} \text{+}{\text{xCO}}_{\left(\text{g}\right)}

Correct answer

4

Step-by-step solution

\text{Ni}\text{+}\text{4CO}\overset{\text{330}\text{K}\text{-}\text{350}\text{K}}{\to} \text{Ni}{\left(\text{CO}\right)}_{\text{4}} \overset{\text{450}\text{K}\text{-}\text{407}\text{K}}{\to} {\text{Ni}}_{\text{(s)}} \text{+}{\text{4CO}}_{\left(\text{g}\right)}

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