Question

3. A hydrochloric acid solution (HCl) is standardized using 0.502 g of sodium carbonate
(NaCO3). Find the molarity of the HCl if 30.50 mL if HCI solution is required for the
titration
2HCI + Na2C03 - 2Nacl+H2O+CO2​

Answer 1

Answer:0.31 molar

Explanation:

moles of hcl per litres of hcl solution is molarity of hcl in the solution.

moles of sodium carbonate can be found by formula given mass / molar mass of sodium carbonate. so, moles of sodium carbonate used in reaction = 0.0047

if 2 mol of hcl reacts with 1 mol of sodium carbonated so, moles of hcl which react with 0.0047 moles of sodium carbonate = 0.00947 moles

moles of hcl = 0.00947 moles

volume of hcl solution = 0.0305 litre

molarity = moles / volume

= 0.00947/ 0.0305

= 0.31 Molar

PLEASE MARK ME AS THE Brainliest

Answer 2

Answer:

In litres of hcl solution, moles of hcl are The solution's molarity of hcl is 0.31 molar.

Explanation:

What is moles?

• In chemistry, a mole, also spelled mol, is a common scientific measurement unit for large quantities of very small objects like atoms, molecules, or other predetermined particles.The mole designates 6.02214076 1023 units, which is a very large number. For the International System of Units (SI), the mole is defined as this number as of May 20, 2019, per the General Conference on Weights and Measures.
• The number of atoms discovered through experimentation to be present in 12 grammes of carbon-12 was previously used to define the mole. In honour of the Italian physicist Amedeo Avogadro, the number of units in a mole is also known as Avogadro's number or Avogadro's constant (1776–1856). Equal volumes of gases under identical conditions should contain the same number of molecules, according to Avogadro's theory.

To learn more about  Avogadro's theory refer to:

https://brainly.in/question/762547

https://brainly.in/question/33180342

#SPJ2