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calculate the molar concentration for h2so4 for the following situation. when 27ml of it was completely titrated by 19ml of 0.90m koh, 1mol of acid was titrated by 2mol of base. give your answer in two significant figures.

Sagot :

The Molar concentration for the H2SO4 titrated against base is 8.55M.

  1. Traditionally, a concentration method that is widely used is the molar concentration unit [mol/ L (M)]. It is the amount of target substance i.e. solute in 1 liter of solution, expressed in moles.
  2. The concentration can be calculated as shown below.(1-liter solution weight) x (purity) molecular weight                                       [Specific gravity of solution (g/mL) times 1,000 (mL) times purity (w/w percent) /100 Molecular weight]
  3. This calculation, can be used to carry out a variety of calculations for creating molar solutions when working with solid materials. It is designed for use in both the teaching and research labs.
  4. For instance, the mass of the chemical required to create a solution can be calculated using the solute concentration, desired solution volume, and the chemical's known molecular weight.
  5. As opposed to this, if the desired concentration is known, but only a small amount (i.e. e. When a very small amount (e.g., mass) of the chemical is purchased, e.g. g. , 10 mg), then the total volume of solution required to dissolve the solid material to reach the desired final concentration can be calculated.

Molar concentration=MV=0.90 x 19=17.1

Titrated against 2 mol base so dividing the molar concentration with 2 and finally getting required result.

New molar concentration=17.1/2=8.55M

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