Question

На восстановление 16,12 г оксида двухвалентного металла требуеться 8,96 л водорода(н.у.)Вычеслите молярную массу эквивалента металла и его оксида.Укажите ,какой это металл?

Answer 1

Х-неизвестный металл
формула оксида ХО
ХО+Н2=Н2О+Х
n(H2)=8,96:22.4=0.4моль
Составим пропорцию
0,4/1=х/1 (х-количество моль оксида)
n(XO)=0.4моль
Молярная масса=16,12:0,4=40,3
40,3-16=24,3
молярная масса равная 24,3 соответствует элементу Mg
формула MgO

Answer 2

Calculation of Molar Mass of Metal Equivalent and its Oxide

To calculate the molar mass of the metal equivalent and its oxide, we need to use the given information:

- The reaction requires 8.96 L of hydrogen gas (at standard temperature and pressure) to react with 16.12 g of the divalent metal oxide. - We need to determine the molar mass of the metal equivalent and its oxide.

Let's calculate the molar mass step by step:

1. Calculate the number of moles of hydrogen gas: - We can use the ideal gas law to calculate the number of moles of hydrogen gas: ``` PV = nRT ``` Since the pressure (P), volume (V), and temperature (T) are at standard conditions, we can use the values: - P = 1 atm - V = 8.96 L - T = 273.15 K (standard temperature) - R = 0.0821 L·atm/(mol·K) (ideal gas constant)

Plugging in these values, we can solve for the number of moles (n) of hydrogen gas.

2. Calculate the number of moles of the divalent metal oxide: - We can use the molar mass of the divalent metal oxide to calculate the number of moles. - The molar mass of the divalent metal oxide can be calculated by dividing the given mass (16.12 g) by the number of moles.

3. Calculate the molar mass of the metal equivalent: - The molar mass of the metal equivalent is equal to the molar mass of the divalent metal oxide divided by the number of moles of the divalent metal oxide.

4. Identify the metal: - Unfortunately, the given information does not provide enough details to identify the specific metal. Additional information is needed to determine the identity of the metal.

Please note that the specific values for the molar mass and metal identity cannot be determined without additional information.

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