Question

вычеслить сколько объемов хлора можно получить при взаимодеиствии 43,5 г оксида марганца 6 с концентрированнои соляной кислотой

Answer 1

                               

 43.5                                        х 

MnO2 + 4HCl = MnCl2 + Cl2 + 2H2O

 86                                      22.4

 х = 11.3 литров 

Answer 2

Calculating the Volume of Chlorine Produced

To calculate the volume of chlorine produced when 43.5 g of manganese oxide (VI) reacts with concentrated hydrochloric acid, we can use the balanced chemical equation for the reaction and the ideal gas law to determine the volume of chlorine gas produced.

The balanced chemical equation for the reaction is: 2MnO2 + 4HCl → 2MnCl2 + 2H2O + Cl2

First, we need to determine the moles of manganese oxide (VI) and then use stoichiometry to find the moles of chlorine produced. Finally, we can use the ideal gas law to calculate the volume of chlorine gas produced.

Step 1: Calculate the Moles of Manganese Oxide (VI)

The molar mass of manganese oxide (VI) (MnO2) is 86.94 g/mol.

Using the given mass of manganese oxide (VI): 43.5 g / 86.94 g/mol = 0.500 moles of MnO2

Step 2: Use Stoichiometry to Find Moles of Chlorine Produced

From the balanced chemical equation, we can see that 2 moles of manganese oxide (VI) produce 1 mole of chlorine gas.

So, the moles of chlorine gas produced: 0.500 moles of MnO2 × (1 mole of Cl2 / 2 moles of MnO2) = 0.250 moles of Cl2

Step 3: Calculate the Volume of Chlorine Gas Produced

The ideal gas law is given by the equation: PV = nRT

Where: P = pressure V = volume n = number of moles R = ideal gas constant T = temperature

Assuming standard temperature and pressure (STP), where T = 273 K and P = 1 atm, and using the ideal gas constant R = 0.0821 L·atm/(K·mol), we can calculate the volume of chlorine gas produced.

V = (0.250 moles) × (0.0821 L·atm/(K·mol)) × (273 K) / (1 atm) = 5.68 L of Cl2

Therefore, when 43.5 g of manganese oxide (VI) reacts with concentrated hydrochloric acid, approximately 5.68 liters of chlorine gas can be produced.