Question

Calculați masa de soluție de Icl de c%=30% necesară în reacția cu 10 molii AgNO3

Answer 1

       xmoli   10moli
         HCl + AgNO3 =AgCl +HNO3                                                                                           1mol    1mol
x=10 moli HCl                                                                                 MHCl=1+35,5=36,5----------->1mol=36,5 g                                                                      1mol HCl--------------36,5g                                                                                      10moli---------------------yg                                                                                                                                y=10.36,5=365g HCl     acesta este md pentru solutie                         ms=md.100:c                                                                                                                          ms=365.100:30=1216 g sol. HCl