Aprecipitation reaction is caused by mixing 100. ml of 0.25 m k2cr2o7 solution with 100. ml of 0.25 m pb(no3)2 solution. when the precipitate forms, it is filtered from the mixture. how many moles of solid product are formed? 0.025 mol0.050 mol0.25 mol0.010 mol

The amount of solid product (lead dichromate) formed is 0.025 moles

Explanation:

To calculate the number of moles for given molarity, we use the equation:

    .....(1)

For potassium dichromate:

Molarity of potassium dichromate solution = 0.25 M

Volume of solution = 100.0 mL

Putting values in equation 1, we get:

For lead nitrate:

Molarity of lead nitrate solution = 0.25 M

Volume of solution = 100.0 mL

Putting values in equation 1, we get:

The chemical equation for the reaction of potassium dichromate and lead nitrate follows:

The solid precipitate formed here is lead dichromate

By Stoichiometry of the reaction:

1 mole of lead nitrate produces 1 mole of lead dichromate

So, 0.025 moles of lead nitrate will produce = of lead dichromate

Hence, the amount of solid product (lead dichromate) formed is 0.025 moles

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