Ask Question
24 November, 22:36

To make a 2 M solution of calcium chloride (CaCl2), you would place how many grams of CaCl2 into a container and then add how much pure water? [mass of a Ca atom = 40; mass of a Cl atom = 35; mass of an O atom = 16; mass of an H atom = 1] A) 220 grams of CaCl2 then add water to make a total volume of 1 liter B) 128 grams of CaCl2 then add water to make a total volume of 1 liter C) 150 grams of CaCl2 then add water to make a total volume of 1 liter. D) 110 grams of CaCl2 then add water to make a total volume of 1 liter E) none of the above is correct

+2
Answers (1)
  1. 24 November, 22:59
    0
    For a volume of 1 liter, we have a total mass of 220 grams of CaCl2 (Option A)

    Explanation:

    Step 1: Given data

    The concentration of the solution we want to make is 2M

    2M = 2 moles / L So the volume = 1L

    The molar mass of CaCl2 is = 40 + 2*35 = 110g/mole

    Step 2: Calculate number of moles

    If we consider the volume = 1 L then for a concentration of 2M, this means the number of moles is 2

    Step 3: Calculate mass

    The molar mass of CaCl2 = 110 g/mole

    This means 110 grams per 1 mole

    for 2 moles the mass is 220 grams

    This means that for a volume of 1 liter, we have a total mass of 220 grams of CaCl2
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “To make a 2 M solution of calcium chloride (CaCl2), you would place how many grams of CaCl2 into a container and then add how much pure ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers