Question

Установите соответствие между химическим уравнением реакции обмена и её условием протекания до конца: к каждой позиции, обозначенной буквой, подберите соответствующую позицию из второго столбца, обозначенную цифрой. ХИМИЧЕСКОЕ УРАВНЕНИЕ УСЛОВИЕ ПРОТЕКАНИЯ РЕАКЦИИ ДО КОНЦА А) CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl 1) в результате реакции образуется вода Б) 2NaOH + H2SO4 = Na2SO4 + 2H2O 2) один из продуктов реакции — газообразное вещество В) Na2CO3 + 2HCl = 2NaCl + H2O + CO2 3) один из продуктов выпадает в осадок Г) BaCl2 + H2SO4 = BaSO4 + 2HCl

Answer 1

А - 3

Б - 1

В - 2

Г - 3

.....................

Answer 2

It looks like you're asking about a chemistry problem that involves matching chemical equations with the conditions for the reaction to proceed to completion. Here are the provided chemical equations and their respective conditions:

1) CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl - Condition: In the reaction, water is formed.

2) 2NaOH + H2SO4 = Na2SO4 + 2H2O - Condition: One of the reaction products is a gaseous substance.

3) Na2CO3 + 2HCl = 2NaCl + H2O + CO2 - Condition: One of the reaction products precipitates as a solid.

4) BaCl2 + H2SO4 = BaSO4 + 2HCl - Condition: A precipitate is formed as a result of the reaction.

To match each chemical equation with its corresponding condition, we can use the following pairs:

A) 1) - Condition: In the reaction, water is formed. B) 2) - Condition: One of the reaction products is a gaseous substance. C) 3) - Condition: One of the reaction products precipitates as a solid. D) 4) - Condition: A precipitate is formed as a result of the reaction.

I hope this helps! If you have any further questions or need additional assistance, feel free to ask.