s Question Completion Status: QUESTION 1 1 poi Balance the following equation fo

Question

s Question Completion Status: QUESTION 1 1 poi Balance the following equation for the acid-base reaction between CaCO3 and H Caco3+2 HCI1 co2+1 QUESTION 2 Calculate the number of moles of Cac03 present when 12.1mL of 0.011 M HCI neutralizes a water sample 1 point QUESTION 3 Calculate the molarity of CacO3 in 50.00 mL of the water sample referred to in the previous question QUESTION 4 g Acid Rain on the EPA website and select the major principal pollutants that cause acid rain Review the Plain English G

Explanation / Answer

Question1

1CaCO3 + 2HCl - - - > 1CO2   + 1CaCl2+ 1H2O

Question 2

No of moles of HCl consumed = (0.011mol/1000ml)×12.1ml = 0.0001331

No of moles of CaCO3 = 0.0001331mol/2 = 0.00006655

Question 3

Molarity = no of moles per liter of solution

Therefore,

molarity of CaCO3 = (0.00006655mol/50ml)×1000ml = 0.001331M

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