Question

Виведіть формулу кислоти з такими масовими чистками хімічних елементів: Гідроген-3,06% , Фосфор-31,6% , Оксиген -65,34%. допоможіть дуже прошу

Answer 1

Если все массовые доли сложить то будет 100%, можем принять это, как 100г. Тогда Гідроген-3,06г., Фосфор-31,6г., Оксиген - 65,34г..  Запишем отношение атомов водорода,фосфора, кислорода, как их массы деленные на атомные массы этих элементов: 

H:P:O=(3,06÷1 ) : (31,06÷31) : (65,34÷16)
H:P:O=3,06 : 1 : 4
Формулв ыещества: H₃PO₄ фосфорная кислота

Answer 2

Chemical Formula Calculation

To calculate the chemical formula of the acid based on the given mass percentages of chemical elements, we can use the following steps:

1. Convert the mass percentages to moles. 2. Divide the moles of each element by the smallest number of moles to obtain the simplest whole number ratio. 3. Use the whole number ratio to determine the subscripts for each element in the chemical formula.

Calculation Steps

1. Convert Mass Percentages to Moles: - Hydrogen (H): 3.06% - Phosphorus (P): 31.6% - Oxygen (O): 65.34%

To convert the percentages to moles, we can assume a 100g sample, which makes the calculations simpler.

- Hydrogen (H): - Moles of H = (3.06g / 1g/mol) = 3.06 moles - Phosphorus (P): - Moles of P = (31.6g / 31.0g/mol) = 1.02 moles - Oxygen (O): - Moles of O = (65.34g / 16.0g/mol) = 4.08 moles

2. Determine Simplest Whole Number Ratio: - The simplest whole number ratio is obtained by dividing the moles of each element by the smallest number of moles, which is 1.02 moles for phosphorus.

- Hydrogen (H): 3.06 / 1.02 ≈ 3 - Phosphorus (P): 1.02 / 1.02 = 1 - Oxygen (O): 4.08 / 1.02 ≈ 4

3. Chemical Formula: - Based on the whole number ratio, the chemical formula of the acid can be determined as H3PO4.

Therefore, the chemical formula of the acid with the given mass percentages of chemical elements (Hydrogen-3.06%, Phosphorus-31.6%, Oxygen-65.34%) is H3PO4.