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    5.  The irrigation water contains CO2ZHCO3, Ca++ and Mg++ ion 1, 4, 2.5 & 1.5. Calculatethe RSC (resid

    Question

     The irrigation water contains CO2ZHCO3, Ca++

    and Mg++ ion 1, 4, 2.5 & 1.5. Calculatethe RSC (residual sodium carbonate) in irrigation water (mcl-1).
    A 0.1 Correct Answer Incorrect Answer
    B 10 Correct Answer Incorrect Answer
    C .01 Correct Answer Incorrect Answer
    D 1 Correct Answer Incorrect Answer

    Solution

    RSC= (CO3- + H2CO3)- (Ca2+ + Mg2=)

    RSC+ (1+4)-(2.5+1.5)=(5-4)= 1

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