A student titrates 0.2087 g of an unknown diprotic acid with 0.1224 M sodium hydroxide. It takes 32.47 mL of the NaOH solution to reach the endpoint. How many moles of NaOH are used in the titration

The number of moles  of NaOH are used in the titration is moles.

The number of moles should be

= 0.00397 moles.

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Given :

A student titrates 0.2087 g of an unknown diprotic acid with 0.1224 M sodium hydroxide.

It takes 32.47 mL of the NaOH solution to reach the endpoint.

To Find :

How many moles of NaOH are used in the titration.

Solution :

Number of moles( n ) is given by :

n = Molarity × Volume( in liters )

n =

n = 0.00397 moles.

Therefore, moles of NaOH are used in the titration is .

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.