Question

How many moles of carbon dioxide are produced in the reaction between hydrochloric acid and calcium carbonat when 2 moles of HCI are used to start with?2HCl+CaCO 3 CaCl 2 +CO2 +H2O

A.2
B. 3
C.1
D. 4

Answer 1

C. 1.

Step-by-step explanation:

Hello!

In this case, given the reaction:

`2HCl+CaCO_3\rightarrow CaCl_2 +CO_2 +H_2O`

Thus, since there is a 2:1 mole ratio between HCl and CO2, as we are given 2 mol HCl, we compute the moles of CO2 as shown below:

`n_(CO_2)=2molHCl*(1molCO_2)/(2molHCl)=1molCO_2`

Thus, the answer is C. 1.

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