A chemistry student weighs out of citric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with solution. Calculate the volume of solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits.

47.7 mL

Explanation:

There is some info missing. I think this is the original question.

A chemistry student weighs out 0.306 g of citric acid (H₃C₆H₅O₇), a triprotic acid, into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1000 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits.

First, let's calculate the moles of citric acid (MW 192.12 g/mol).

0.306 g × (1 mol/192.12 g) = 1.59 × 10⁻³ mol

Let's consider the neutralization reaction between H₃C₆H₅O₇ and NaOH.

H₃C₆H₅O₇ + 3 NaOH → Na₃C₆H₅O₇ + 3 H₂O

The molar ratio of H₃C₆H₅O₇ to NaOH is 1:3. The moles of NaOH are 3 × 1.59 × 10⁻³ mol = 4.77 × 10⁻³ mol

The volume of 0.1000 M NaOH solution that contains 4.77 × 10⁻³ moles is:

4.77 × 10⁻³ mol × (1000 mL/0.1000 mol) = 47.7 mL

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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