Chemistry, 08.10.2019 18:20 ashcormu11

38.0 ml of a 0.026 m solution of hcl is needed to react completely with a 0.032 m naoh solution. calculate the number of moles of hcl originally present

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Answer from: brockandersin

The number of mole of HCl originally present in the solution is 9.88×10¯⁴ mole

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

With the above information in mind, we can obtain the number of mole of HCl originally present in the solution. This is illustrated below:

Molarity of HCl = 0.026 M

Volume = 38 mL = 38 / 1000 = 0.038 L

Mole of HCl =?

Mole = Molarity × volume

Mole of HCl = 0.026 × 0.038

Mole of HCl = 9.88×10¯⁴ mole

Thus, the number of mole of HCl originally present in the solution is 9.88×10¯⁴ mole

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Answer from: Savageman4654

The number of moles of HCl actually present is 0.000988

Explanation:

The balanced chemical equation of the given reaction is

$HCl+NaOH \rightarrow NaCl+H_2 O$

Here one mole of HCl reacts with one mole of NaOH to form one mole of NaCl and one mole of water. Here the molarity of HCl is given as 0.026M.

molarity of NaOH is 0.032M

molarity is the number of moles per unit volume of solution.

we have to calculate the number of moles in 36 mL of HCl.

38 mL=36/1000=0.038L

the number of moles in 38 mL of HCl is given by

no of moles = $0.026 \times 0.038=0.000988$

Answer from: Quest

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

Answer from: Quest

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

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38.0 ml of a 0.026 m solution of hcl is needed to react completely with a 0.032 m naoh solution. cal...

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