Química da Cla

Solução - Revisão Provão Riachuelo:

1) 2NaOH  +  H₂SO₄  à Na₂SO₄  + 2H₂O

   80g---------98g                                        Mi= m1                           0,20=0,080        

    X ----------0,098                                            M1.V                                 40.V

   X= 0,080g                                                                                       v= 0,080

                                                                                                                   8

                                                                                                           V= 0.010L = 10mL

2)  Mia.Va.Xa= Mib.Vb.Xb              M1.V1= M2.V2

 Mia.25.1 =0,2.25.1                         0,2.25= M2. 50

                                                            M2 = 0,1mol/L

Mia= 0,2mol/L

* O resto vai mais tarde! =D