Tom asked in Science & MathematicsChemistry · 9 years ago

What do we get from Ca + NaCl?

Do we get Na as an ion?

4 Answers

  • 9 years ago
    Favorite Answer

    We have to assume that this reaction is carried out in aqueous solution . If you mix solid Ca metal with dry NaCl ( totally excluding water) no reaction will occur.

    So we start with a solution of NaCl in water - what happens: The NaCl dissociates into ions:

    NaCl(aq) → Na+(aq) + Cl-(aq)

    You can now do one of two things - but they both have exactly the same result:

    You can either add the Ca metal to water ( and then pour into the NaCl solution) or you can add Ca metal directly to the NaCl solution. In both cases the Ca metal will react with the water to produce calcium hydroxide and hydrogen gas.

    Ca(s) + 2H2O(l) → Ca(OH)2( s/aq) + H2(g)

    The Ca(OH)2 that is produced is only slightly soluble in water - hence I have indicated ( s/aq).

    If you then consider the solution part - you allow the Ca(OH)2 to settle - you will have:

    Ca(OH)2(aq) + NaCl(aq) → Na+ ions Cl- ions Ca 2+ions and OH- ions. The solution will be quite clear like water.

    The solution will contain Na+ ions - but these would have been in the NaCl solution without the addition of the Ca metal.

  • 9 years ago

    Ca + NaCl----> CaCl2 + Na(s)

  • ?
    Lv 7
    9 years ago

    Ca + 2NaCl --> CaCl2 + 2Na

  • Ca+2NaCl---------->CaCl2 + 2Na

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