a sample of soil containing hydrated barium chloride potassium chloride plus inert material weighd 0.8076g. tha sample was then dissolvd in water n treated with silver nitrate.tha resulting precipitate was collectd n found to weigh 0.5846g. calculate tha percentage of precipitate
To calculate the percentage of precipitate, you need to find the mass of the precipitate and then calculate the percentage using the formula:
Percentage of precipitate = (mass of precipitate / mass of sample) x 100
First, let's find the mass of the precipitate:
Mass of precipitate = 0.5846g
Next, we need to find the mass of the sample. Since the sample contains hydrated barium chloride, potassium chloride, and inert material, we need to determine the mass of only the hydrated barium chloride and potassium chloride.
Given that the mass of the sample is 0.8076g, and we know the mass of the precipitate (0.5846g), we can subtract the mass of the precipitate from the mass of the sample to find the mass of the hydrated barium chloride and potassium chloride:
Mass of hydrated barium chloride and potassium chloride = Mass of sample - Mass of precipitate
Mass of hydrated barium chloride and potassium chloride = 0.8076g - 0.5846g
Now, calculate the percentage of the precipitate:
Percentage of precipitate = (0.5846g / (0.8076g - 0.5846g)) x 100
Simplify the equation:
Percentage of precipitate = (0.5846g / 0.223g) x 100
Percentage of precipitate = 261.67%
Therefore, the percentage of the precipitate is 261.67%.