Question

...Текст задачи: "Оксид меди(II) массой 32 г прореагировал с раствором соляной кислоты. В результате образовался хлорид меди (II) и вода. Определите массу соли меди." Полностью решите задачу. В ответ запишите число без единиц измерения, округленное до целых. (Ответ числовой! Без букв и лишних символов!)

Answer 1

Ответ:

Вотвотвотвотвотвотаот

Объяснение:

Answer 2

Problem Analysis

In this problem, we are given that copper(II) oxide with a mass of 32 g reacts with hydrochloric acid to form copper(II) chloride and water. We need to determine the mass of copper chloride formed.

Solution

To solve this problem, we need to use the concept of stoichiometry and the balanced chemical equation for the reaction between copper(II) oxide and hydrochloric acid.

The balanced chemical equation for the reaction is:

CuO + 2HCl → CuCl2 + H2O

From the balanced equation, we can see that 1 mole of copper(II) oxide reacts with 2 moles of hydrochloric acid to produce 1 mole of copper(II) chloride and 1 mole of water.

To find the mass of copper(II) chloride formed, we need to calculate the number of moles of copper(II) oxide and then use the mole ratio from the balanced equation to find the number of moles of copper(II) chloride. Finally, we can convert the moles of copper(II) chloride to grams using its molar mass.

Let's calculate the mass of copper(II) chloride formed step by step:

Step 1: Calculate the number of moles of copper(II) oxide. - The molar mass of copper(II) oxide (CuO) is 79.55 g/mol. - We are given that the mass of copper(II) oxide is 32 g. - Using the formula: moles = mass / molar mass, we can calculate the number of moles of copper(II) oxide.

Step 2: Use the mole ratio from the balanced equation to find the number of moles of copper(II) chloride. - From the balanced equation, we know that the mole ratio of copper(II) oxide to copper(II) chloride is 1:1. - Therefore, the number of moles of copper(II) chloride formed is equal to the number of moles of copper(II) oxide.

Step 3: Convert the moles of copper(II) chloride to grams. - The molar mass of copper(II) chloride (CuCl2) is 134.45 g/mol. - Using the formula: mass = moles * molar mass, we can calculate the mass of copper(II) chloride.

Let's perform the calculations:

Step 1: Calculate the number of moles of copper(II) oxide. - Moles of CuO = 32 g / 79.55 g/mol = 0.402 moles

Step 2: Use the mole ratio to find the number of moles of copper(II) chloride. - Moles of CuCl2 = 0.402 moles

Step 3: Convert the moles of copper(II) chloride to grams. - Mass of CuCl2 = 0.402 moles * 134.45 g/mol = 54.06 g

Therefore, the mass of copper(II) chloride formed is approximately 54 grams.

Answer

The mass of copper(II) chloride formed is approximately 54 grams.