При пропускании тока с какой силой через 600 г 30 % раствор Na2CO3 в течении 96500 минут массовая доля соли составит 35,3 %?
можно с решением. ​

Объяснение:

Mr(K2CO3) = 39*2 + 12 + 16*3 =138

W(K) = Ar(K) *n / Mr(K2CO3)  *100% =39*2 / 138  *100% =56%

W(C) = Ar(C) *n / Mr(K2CO3)  *100% = 12*1 / 138  *100% =9%

W(O) = Ar(O) *n / Mr(K2CO3) *100% = 16*3 / 138  *100% =35%

Mr(CuO) = 64 + 16 = 80

W(Cu) = Ar(Cu) *n / Mr(CuO) *100% = 64*1 / 80  *100% = 80%

W(O) = Ar(O) *n / Mr(CuO)  *100% = 16*1 / 80  *100% = 20%

Mr(Ca3(PO4)2) = 40*3 + 31*2 + 16*8 =310

W(Ca) = Ar(Ca) *n / Mr(Ca3(PO4)2)  *100% = 40*3 / 310  *100% =39%

W(P) = Ar(P) *n / Mr(Ca3(PO4)2) *100% = 31*2 / 310  *100% =20%

W(O) = Ar(O) *n / Mr(Ca3(PO4)2)  *100% = 16*8 / 310  *100% =41%

 0,5 моль                                                                      Х л

   Са           +          H2SO4         =       CaSO4     +        H2

n = 1 моль                                                                    n = 1 моль

                                                                                    Vm=22,4 л/моль

                                                                                      V=22,4 л

0,5 моль Са     -     Х л Н2

1 моль Са       -     22,4 л Н2

V(H2) = 0,5 * 22,4 = 11,2 л