Can someone good in chemistry help me with these questions? 1. Calculate the rate of diffusion of NH3 gas from the data you have for distance travelled and time.
2. Calculate the rate of diffusion of HCl gas from the data you have for distance travelled and time.
3. Calculate the ratio of rate of diffusion of NH3/rate of diffusion of HCl (experimental value)
4. Calculate the ratio using grahams law of diffusion (theoretical value) rateNH3/rateHCl using Grahams law
5. Compare the two values by calculating the %deviation
Discuss these differences in the discussion part as well.

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Explanation:

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol