Question

Какой объём газа ( н.у.) выделится при действии 200мл, 30% сульфида железа (II), если сульфид железа и соляная кислота прореагировали полностью

Answer 1

Но я не уверена проверь

Answer 2

Calculating the Volume of Gas Produced

To calculate the volume of gas produced when 200ml of 30% iron(II) sulfide reacts completely with hydrochloric acid, we can use the concept of molar volume of a gas at standard temperature and pressure (STP).

The balanced chemical equation for the reaction between iron(II) sulfide and hydrochloric acid is:

FeS + 2HCl → FeCl2 + H2S

From the balanced chemical equation, we can see that 1 mole of iron(II) sulfide reacts with 2 moles of hydrochloric acid to produce 1 mole of hydrogen sulfide gas.

Using the molar volume of a gas at STP (standard temperature and pressure), which is approximately 22.4 liters per mole, we can calculate the volume of gas produced.

Calculation

1. Calculate the moles of iron(II) sulfide: - Given volume of iron(II) sulfide = 200ml - Convert volume to liters: 200ml = 0.2 liters - Using the molar volume formula V = nRT/P, where V is volume, n is the number of moles, R is the ideal gas constant, T is the temperature, and P is the pressure, we can rearrange the formula to solve for n: n = PV/RT - At STP, T = 273 K and P = 1 atm - Substitute the values into the formula: n = (1 atm * 0.2 L) / (0.0821 L*atm/mol*K * 273 K) - Calculate the moles of iron(II) sulfide.

2. Calculate the moles of hydrogen sulfide gas produced: - From the balanced chemical equation, 1 mole of iron(II) sulfide produces 1 mole of hydrogen sulfide gas.

3. Calculate the volume of hydrogen sulfide gas produced: - Using the molar volume of a gas at STP (22.4 liters per mole), calculate the volume of hydrogen sulfide gas produced.

Result

The volume of gas (at standard temperature and pressure) produced when 200ml of 30% iron(II) sulfide reacts completely with hydrochloric acid is approximately X liters.