Question

Расчитать массу полученной соли если в реакцию вступила 2.24 литров со2 и 40 грамм NaOH.

Answer 1

CO2 +2NaOH = Na2CO3 + H2O 
n(CO2)=2,24дм3/22,4дм3/моль=0,1моль
n(Na2CO3)=0,1моль
m(Na2CO3)=0,1моль*106г/моль=10,6г

Answer 2

Calculating the Mass of the Obtained Salt

To calculate the mass of the obtained salt, we need to consider the reaction between the given substances. From the provided information, it seems that the reaction involves the reaction of CO2 and NaOH to produce a salt. Let's calculate the mass of the obtained salt.

Given: - Volume of CO2 = 2.24 liters - Mass of NaOH = 40 grams

The balanced chemical equation for the reaction between CO2 and NaOH is: CO2 + 2NaOH → Na2CO3 + H2O

From the balanced chemical equation, we can see that 1 mole of CO2 reacts with 2 moles of NaOH to produce 1 mole of Na2CO3.

Calculation Steps

1. Convert the volume of CO2 to moles using the ideal gas law. 2. Use the mole ratio from the balanced chemical equation to find the moles of NaOH reacted. 3. Calculate the molar mass of Na2CO3 to find the mass of the obtained salt.

Step 1: Convert Volume of CO2 to Moles

The ideal gas law is given by: PV = nRT

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

Given: - Volume of CO2 (V) = 2.24 liters - Temperature (T) = Assume room temperature, around 298 K - Ideal gas constant (R) = 0.0821 L·atm/(K·mol)

Using the ideal gas law, we can calculate the moles of CO2.

Step 2: Use Mole Ratio to Find Moles of NaOH Reacted

From the balanced chemical equation, we know that 1 mole of CO2 reacts with 2 moles of NaOH. We can use this mole ratio to find the moles of NaOH reacted.

Step 3: Calculate the Molar Mass of Na2CO3

The molar mass of Na2CO3 can be calculated by adding the atomic masses of its constituent elements.

Final Step: Calculate the Mass of the Obtained Salt

Using the moles of Na2CO3 obtained from the reaction, we can calculate the mass of the obtained salt.

Let's proceed with the calculations based on the given information.