Chemistry

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NaHCO3 + HCl -> NaCl+H2O+CO2
What is the normality of a sodium bi carbonate solution containing 5.08g NaHCO3 in 150 ml solution?

  • Chemistry -

    Normality? H+ eqivalents is 2, so

    Normality=molesNaHCO3/.150 * 2

  • Chemistry -

    How do i find the moles of NaHCO3?

  • Chemistry -

    do you add all the atomic masses.....giving you 84.004?

  • Chemistry -

    1120.05

  • Chemistry -

    or is it ......

    5.08NaHCO3/150ml*1000ml/1L*2eq/84.004g NaHCO3 = 0.806 N

  • Chemistry -

    The definition of normality is number of milliequivalents/mL (or number equivalents/L).
    Equivalent weight for NaHCO3 in the reaction shown = 23+1+12+48 = about 84 but you need to verify that and do it exactly. I'm just rounding the atomic weights to the nearest whole number.
    So 5.08/84 = number of equivalents.
    Then number of equivalents/0.150 L = normality = 0.403 N. Your answer of 0.806 is high by a factor of 2.

  • Chemistry -

    .403?

  • Chemistry -

    Yes, 0.403 N.

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