Honors stoichiometry activity worksheet

instructions: in this laboratory activity, you will taste test two samples of just lemons lemonade for taste quality. then you will analyze lemonade production data for percent yield and excess ingredients. complete each section of this worksheet, and submit it to your instructor for grading.

activity two: just lemons, inc. production

here's a one-batch sample of just lemons lemonade production. determine the percent yield and amount of leftover ingredients for lemonade production and place your answers in the data chart. hint: complete stoichiometry calculations for each ingredient to determine the theoretical yield. complete a limiting reactant-to-excess reactant calculation for both excess ingredients.

water 946.36 g sugar 196.86 g lemon juice 193.37 g lemonade 2050.25
percent yield ? leftover ingredients ?

just lemons lemonade recipe equation:

2 water + sugar + lemon juice = 4 lemonade

mole conversion factors:

1 mole of water = 1 cup = 236.59 g

1 mole of sugar = 1 cup = 225 g

1 mole of lemon juice = 1 cup = 257.83 g

1 mole of lemonade = 1 cup = 719.42 g

Explanation: Here, we will be considering 1 cup is equal to 1 mol.

2 water + sugar + lemon juice → 4 lemonade

Moles of water present in 946.36 g of water

Moles of sugar present in 196.86 g of water

Moles of lemon juice present in 193.37 g of water

Moles of lemonade in 2050.25 g of water

As we can see that number of moles of lemon juice are limited.

So, we will consider the reaction will complete in accordance with moles of lemon juice.

1 mole lemon juice reacts with 2 mol of water,then 0.7499 mol of lemon juice will react with:

of water

Mass of water used =  1.4998 mol × 236.59 g/mol=354.8376 g

Water remained unused = 946.36 g - 354.8376 g =591.5223 g

1 mole lemon juice reacts with  mol of sugar,then 0.7499 mol of lemon juice will react with:

of water

Mass of sugar used =  0.7499 mol × 225 g/mol = 168.7275 g

Sugar remained unused = 196.86 g - 28.1325 g

1 mole of lemon juice gives 4 moles of lemonade.

Then 0.7499 mol of lemon juice will give:

of lemonade

Mass of lemonade obtained  = 2.996 mol × 719.42 g/mol = 2157.9722 g

Theoretical yield of lemonade = 2157.9722 g

Experimental yield of lemonade = 2050.25 g

Percentage yield of lemonade:

The percentage yield of  lemonade is 95% and ingredient which remained unused were water and sugar.

you need to stop taking that class