Question

4g hydrogen reacts with 9 * 10^23 chlorine molecules

Answer 1

Answer:

kskdgslajshkszlzhxbzjsjsj

Explanation:

jzjsksjdjdjdhjsldodjdhdodos

Answer 2

The question is incomplete, here is the complete question:

4 g hydrogen reacts with 9×10^{23} chlorine molecules and form HCI gas. If the total pressure of the system after the reaction is 700 mmHg, what is the partial pressure of HCI?

The partial pressure of HCl is 598.5 mmHg

Explanation:

• For hydrogen gas:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of hydrogen gas = 4 g

Molar mass of hydrogen gas = 2 g/mol

Putting values in above equation, we get:

$\text{Moles of hydrogen gas}=\frac{4g}{2g/mol}=2mol$

• For chlorine gas:

According to mole concept:

$6.022\times 10^{23}$ number of molecules are present in 1 mole of a compound

So, $9\times 10^{23}$ number of molecules will be present in = $\frac{1}{6.022\times 10^{23}}\times 9\times 10^{23}=1.494mol$ of chlorine gas

The chemical equation for the formation of HCl follows:

$H_2+Cl_2\rightarrow 2HCl$

By Stoichiometry of the reaction:

1 moles of chlorine gas reacts with 1 mole of hydrogen gas.

So, 1.494 moles of chlorine gas will react with = $\frac{1}{1}\times 1.494=1.494mol$ of hydrogen gas

As, given amount of hydrogen gas is more than the required amount. So, it is considered as an excess reagent.

Thus, chlorine gas is considered as a limiting reagent because it limits the formation of product.

Excess moles of hydrogen gas remaining = [2 - 1.494] = 0.506 moles

By Stoichiometry of the reaction:

1 mole of chlorine gas produces 2 moles of HCl

So, 1.494 moles of chlorine gas will produce = $\frac{2}{1}\times 1.494=2.988moles$ of HCl

Total moles of the container = [2.988 + 0.506] = 3.494 moles

Mole fraction of a substance is given by:

$\chi_A=\frac{n_A}{n_A+n_B}$

So, $\chi_{HCl}=\frac{2.988}{3.494}=0.855$

To calculate the partial pressure of HCl, we use the equation given by Raoult's law, which is:

$p_{A}=p_T\times \chi_{A}$

where,

$p_A$ = partial pressure of HCl = ?

$p_T$ = total pressure = 700 mmHg

$\chi_A$ = mole fraction of HCl = 0.855

Putting values in above equation, we get:

$p_{HCl}=700mmHg\times 0.855\\\\p_{HCl}=598.5mmHg$

Learn more about number of moles and Raoult's law:

https://brainly.com/question/13613851

https://brainly.com/question/10982990

#learnwithbrainly