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How much ZnCl2 will make from 3 mol Zn and 5 mol HCI Zn + 2HCI --> ZnCI2 + H2

How much ZnCl2 will make from 3 mol Zn and 5 mol HCI Zn + 2HCI --> ZnCI2 + H2

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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How much ZnCl2 will make from 3 mol Zn and 5 mol HCI Zn + 2HCI --> ZnCI2 + H2

Expert Solution
Step 1

GIVEN: 

Moles of Zn = 3 mol

Moles of HCl = 5 mol

To calculate: Amount of ZnCl2 formed

Step 2

Given reaction is:

Zn + 2HCI -----> ZnCI2 + H2 

First, we will find the LIMITING REAGENT.

According to the balanced reaction,

1 mol Zn reacts completely with 2 mol HCl.

So, 3 mol Zn will react completely with  2 x 3 mol HCl

                                                           = 6 mol HCl

But the given amount of HCl is 5 mol i.e. less than the required amount.

So, HCl act as the LIMITING REAGENT

                       

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