doris_2j asked in 科學及數學化學 · 1 decade ago

concentration calculation

What is the % of a NaCl solution if it's a 2M NaCl solution? And how do you calculate it?

2 Answers

Rating
  • 1 decade ago
    Favorite Answer

    Suppose that your question refers to % by mass, then:

    In 1 dm3 of 2 M NaCl solution:

    No. of moles of NaCl = 2 with mass = 2 x 58.5 = 117 g

    Mass of water = 1000 g

    So % by mass of NaCl = 117/(117 + 1000) x 100% = 10.47%

    Source(s): My chemical knowledge
  • 1 decade ago

    2M NaCl solution is absolubely a 100% NaCl solution

Still have questions? Get your answers by asking now.