Question

Яку кількість станової (оцтової) кислоти було взято для виготовлення стилетаноату (стилового естеру оцтової кислоти), якщо останнього було добуто 70.4 г. що становило 80% від теоретичної кількості. ДОПОМОЖІТЬ БУДЬЛАСКА​

Answer 1

Ответ:

рішення на фото. відповідь 60 г

Answer 2

Calculation of Acetic Acid Used to Produce Ethyl Acetate

To calculate the amount of acetic acid used to produce ethyl acetate, we can use the given information that 70.4 g of ethyl acetate was obtained, which represents 80% of the theoretical quantity.

Step 1: Calculate the Theoretical Quantity of Ethyl Acetate The theoretical quantity of ethyl acetate can be calculated using the formula: Theoretical quantity = Actual quantity / Percentage yield

Step 2: Determine the Molar Mass of Ethyl Acetate The molar mass of ethyl acetate (C4H8O2) can be calculated by adding the atomic masses of its constituent atoms: C (carbon) = 12.01 g/mol H (hydrogen) = 1.008 g/mol O (oxygen) = 16.00 g/mol

Step 3: Convert the Mass of Ethyl Acetate to Moles Using the molar mass of ethyl acetate, we can convert the mass of ethyl acetate obtained to moles using the formula: Moles = Mass / Molar mass

Step 4: Calculate the Amount of Acetic Acid The balanced chemical equation for the formation of ethyl acetate from acetic acid and ethanol is: CH3COOH + C2H5OH → CH3COOC2H5 + H2O

From the balanced equation, we can determine the stoichiometry of the reaction and calculate the amount of acetic acid required.

Let's proceed with the calculations.