Предмет: Химия, автор: zinchi

Срочно!!!Обчисліть масу утвореного осаду,якщо нітрат срібла,масою 56 г прореагував з магній хлоридом.Напишіть реакцію в молекулярному,повному йонному і скороченому вигляді,визначте тип реакції.Даю 70 балов!!!

Ответы

Автор ответа: dyexfnf
1

Ответ:

Объяснение:

Дано:

m(AgNO₃) = 56г

Найти: m(AgCl) -?

М(AgNO₃) = 108 + 14 + 16 * 3 = 170 г/моль

М(AgCl) = 108 + 35 = 143 г/моль

56 г                         х г

2AgNO₃ + MgCl₂ = 2AgCl↓ + Mg(NO₃)₂

n = 2 моль               n = 2 моль

М = 170 г/моль        М = 143 г/моль

m = 340 г                  m = 286 г

56 г (AgNO₃)   - х г (AgCl)

340 г (AgNO₃) - 286 г (AgCl)

m(AgCl) = 56 * 286 /340 = 47,1 г

MgCl₂ + 2AgNO₃ = 2AgCl↓ + Mg(NO₃)₂

Mg⁺² + 2Cl⁻ + 2Ag⁺ + 2NO₃⁻ = 2AgCl↓ + Mg⁺² + 2NO⁻

2Ag⁺ + 2Cl⁻ = 2AgCl↓

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Реши примеры на время.


1. 6800 : 170 + 60 ⋅ 120 =

2. 420 : 30 – 760 : 190 =

3. 130 ⋅ 4 + 650 : 50 =

4. 30 ⋅ 180 + 120 ⋅ 9 =

5. 40 ⋅ 150 – 180 ⋅ 3 =

6. 90 ⋅ 110 + 760 : 40 =

7. (8 ⋅ 170 – 6 ⋅ 170) : 20 =



8. 50 ⋅ 130 + 9 ⋅ 140 =

9. 5 ⋅ 160 + 7500 : 150 =

10. 17 ⋅ 40 + 18 ⋅ 70 + 60 =

11. 60 ⋅ 110 – 1020 : 170 =

12. 40 ⋅ 170 + 260 : 20 – 6 =

13. 950 : 19 + 20 ⋅ 12 + 9 =

14. 1020 : 60 + 1280 : 8 =



15. 4 ⋅ 180 – 840 : 7 + 30 =

16. 70 ⋅ 140 – 30 ⋅ 15 =

17. 12 ⋅ 80 + 720 : 40 + 20 =

18. 8 ⋅ 140 + 14400 : 180 =

19. 30 ⋅ 19 – 40 ⋅ 14 + 5 =

20. 13 ⋅ 90 + 20 ⋅ 140 =

21. 40 ⋅ 110 + 190 ⋅ 3 + 80 =

22. 6 ⋅ 190 – 770 : 110 =


23. 19 ⋅ 50 + 11900 : 170 =

24. 7800 : 130 + 170 ⋅ 4 =

25. 190 ⋅ 9 – 18 ⋅ 80 + 30 =

26. 960 : 80 + 60 ⋅ 160 =

27. 70 ⋅ 110 – 9 ⋅ 190 + 50 =

28. 30 ⋅ 11 – 6500 : 50 =

29. 60 ⋅ 180 – 950 : 190 =

30. 30 ⋅ 18 + 800 : 16 – 40 =



31. 1120 : 70 + 80 ⋅ 17 =

32. 80 ⋅ 13 + 160 ⋅ 8 – 10 =

33. 20 ⋅ 15 + 70 ⋅ 120 – 40 =

34. 40 ⋅ 130 + 80 ⋅ 120 =

35. 70 ⋅ 19 + 70 ⋅ 17 – 20 =

36. 80 ⋅ 150 – 16 ⋅ 80 + 10 =

37. (13 ⋅ 70 – 130 ⋅ 5) : 20 =

38. 1440 : 18 + 13 ⋅ 90 – 40 =



39. 11 ⋅ 70 + 170 ⋅ 6 – 50 =

40. (40 ⋅ 18 – 40 ⋅ 15) : 30 =

41. 70 ⋅ 16 + 520 : 40 – 70 =

42. 19 ⋅ 30 + 1260 : 18 – 50 =

43. 1170 : 9 + 600 : 5 – 30 =

44. 20 ⋅ 16 + 16 ⋅ 80 – 2 ⋅ 10 =

45. 40 ⋅ 15 + 14 ⋅ 40 + 5 ⋅ 10 =

46. 14 ⋅ 40 – 520 : 13 + 50 – 10 =