Ask Question
14 January, 13:56

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. 14 January, 17:21
    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 you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers