Question

Select the correct answer.

When carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation:

CO2 + H2O → H2CO3.

If 495 milliliters of carbon dioxide at 25°C and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid?

Use the periodic table and the ideal gas resource

A. 0.889 g
B. 1.10g
C. 1.27g
D. 2.02g


What's the answer! quick!

Answer 1

its c. 1.27

Step-by-step explanation:

Answer 2

Answer: The correct answer is option (C).

Step-by-step explanation:

Pressure of the gas = 101.3 kilopascal

Volume of the gas = 495 mL = 0.495 L

Temperature of the gas = 25°C = 298 K(0°C = 273 K)

Value of gas constant in in kilopascals =8.314 kPa L\K mol

According to the ideal gas equation:'

`PV=nRT`

`n=(PV)/(RT)=(101.3 kPa* 0.495 L)/(8.314 kPa L/K mol* 298 K)=0.0202 mol`Moles of carbon-dioxide gas = 0.0202 moles

`CO_2+H_2O\rightarrow H_2CO_3`.

According to reaction 1 mole of
`CO_2` gas gives 1 moles
`H_2CO_3`, then 0.0202 moles of
`CO_2` will produce :
`(1)/(1)* 0.0202` moles of
`H_2CO_3` that 0.0202 moles.

Mass of
`H_2CO_3` = Moles Molar mass of
`H_2CO_3`

=
`0.0202 moles* 62 g/mol=1.2524 g`

From the options given the closest value to our answer is of option(C).

Hence ,the correct answer is option C.