Предмет: Химия, автор: ivankarpuk564

СРОЧНО!!! ТЕРМІНОВО!!! ДАЮ 50 БАЛІВ!!!

Яка з наведених реакцій відбувається: А) Cu + AgNO3 Б) Al + Ca(NO3 ) В) Zn + NaNO3 Г) Fe + ZnCl2 Запишіть рівняння реакції.​

Ответы

Автор ответа: vtlfilv2
1

Ответ:

Реакції:

А) Cu + AgNO3 - відбувається однорідна заміщення, тому що мідь (Cu) заміщує срібло (Ag) в розчині нітрату срібла (AgNO3):

Cu + 2AgNO3 -> 2Ag + Cu(NO3)2

Б) Al + Ca(NO3)2 - ця реакція не відбувається, оскільки алюміній (Al) менш активний за кальцій (Ca), тому ніякої реакції не буде.

В) Zn + NaNO3 - відбувається однорідна заміщення, оскільки цинк (Zn) заміщує натрій (Na) в розчині нітрату натрію (NaNO3):

Zn + 2NaNO3 -> 2Na + Zn(NO3)2

Г) Fe + ZnCl2 - відбувається однорідна заміщення, оскільки залізо (Fe) заміщує цинк (Zn) у хлориді цинку (ZnCl2):

Fe + ZnCl2 -> Zn + FeCl2

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