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Physical Chemistry

The following data were obtained during the first order thermal decomposition of 𝑺𝑶𝟐𝑪𝒍𝟐 at a constant volume:
𝑺𝑶𝟐𝑪𝒍𝟐(𝒈) ⟶ 𝑺𝑶𝟐(𝒈) + 𝑪𝒍𝟐(𝒈)

𝑬𝒙𝒑𝒆𝒓𝒊𝒎𝒆𝒏𝒕 𝑻𝒊𝒎𝒆𝒔/𝒔−𝟏 𝑻𝒐𝒕𝒂𝒍 𝒑𝒓𝒆𝒔𝒔𝒖𝒓𝒆/𝒂𝒕𝒎
𝟏 𝟎 𝟎. 𝟒
𝟐 𝟏𝟎𝟎 𝟎. 𝟕

Calculate the rate constant.

jay

7 Years agoGrade

1 Answer

Vikas TU

7 Years ago

We know the formula to find the rate constant in first order reaction is:

k=1/t(ln(Ao/A))

Where Ao is the initial concentration and A is the intermediate concentration so

We have the total pressure initially as 4atm and the intermediate pressure is 7. So the concentration of So2Cl2 at that time would be 1.

Applying the formula:-

k=100(ln(4/1))........................................(The inverse of time is given as 100 )

k=138.6.

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