Напишите уравнения реакций, с которых можно осуществить следующие превращения: 1) С6Н5СОН--->(над стрелкой: +K2Cr2O7+H2SO4) X2 >(над стрелкой: +C2H5OH, H+, t) X3

2) C6H6--->C6H5CH3--->C6H5COOH--->(над стрелкой: CH3OH, H+, t) X1 --->(над стрелкой +NaOH) X2 ---> C6H6

не знаю что писать но спс за Hit the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are notified that any dissemination distribution or copying of this email and any attachments is intended only for the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you.

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 70%                                          25%      
                  +  x г воды    =              
250г                                       (250+x) г

m растворенного вещества не изменилась ==> m1=m2
                              m рв
из формулы: w=    выражаем  m рв =  w * m р-ра
                              m р-ра

m1=0.7*250г =175г                    m2=0.25*(250г+x)

приравниваем         0,25*(250г+x)=175г
                                             250г+x=700г
                                                   x=450г