6. (2 points) suppose 50.0 ml of 0.350 m lithium hydroxide is mixed with 30.0 ml of 0.250 m perchloric acid. what is the ph of the resulting solution, assume the reaction goes to completion.

The pH of the solution is 13.1.

The equation of the reaction is;

HClO4(aq) + NaOH(aq) > NaClO4(aq) + H2O(l)

Number of moles of base= 50/1000 L × 0.350 M = 0.0175 moles

Number of moles of acid= 30/1000 L ×  0.250 M = 0.0075 moles

Since the reaction is 1:1, we can see that limiting reactant is the acid HClO4.

Amount of excess base = 0.0175 moles -  0.0075 moles = 0.01 moles

Total volume of solution = 50mL + 30mL = 80mL or 0.08 L

Molarity of excess OH- =  0.01 moles/0.08 L = 0.125 M

Recall that;

pOH = -log[OH-]

pOH = -log[0.125 M]

pOH = 0.9

Again;

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 0.9

pH = 13.1

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 13.1

Explanation:

To calculate the number of moles for given molarity, we use the equation:

    .....(1)

Molarity of LiOH solution = 0.350 M

Volume of solution = 50.0 mL

Putting values in equation 1, we get:

Moles of ion = 0.0175 moles

Moles of ion = 0.00625 moles

The chemical equation for the reaction of LiOH with follows:

For neutralization:

1 mole of ion will react with 1 mole of ion

As, 0.00625 moles of ion react with= moles of ion

Moles of left = (0.0175-0.00625) = 0.01125 moles

Concentration of

pH +pOH = 14

pH = 14- pOH = 14 -0.851 = 13.1

Thus pH of the resulting solution is 13.1

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation: