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ziro4ka [17]
3 years ago
15

I need help please by answering that question

Chemistry
1 answer:
jenyasd209 [6]3 years ago
5 0
If i can recall it is D
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Potassium hydrogen phthalate is often used to standardize solutions of strong bases. Highly pure samples of this solid weak acid
Mazyrski [523]

Answer:

0.12 M

Explanation:

Molarity of sodium hydroxide = number of moles of sodium hydroxide / volume in liters

equation of reaction between NaOH and Potassium hydrogen phthalate

NaOH(aq) + KHC₈H₄O₄(aq)  KNaC₈H₄O₄(aq) + H₂O(aq)

molar mass of KHC₈H₄O₄ = 204.22g/mol

amount required to titrate with NaOH = 0.5816 g

mole of  KHC₈H₄O₄ = 0.5816 g / 204.22g/mol = 0.00285 mole

considering the equation, 1 mole of NaOH required 1 mole of KHC₈H₄O₄

0.00285 mole  KHC₈H₄O₄ will require 0.00285 mole of NaOH

Molarity = 0.00285 mole  / ( 23.73 ml / 1000ml) L = 0.12 M

3 0
3 years ago
1.0 L of .50 M of NaCl
Vlada [557]

Explanation:

From the given parameters we can calculate the mass and number of moles in this amount of solution of NaCl

Volume of solution = 1L

Molarity = 0.5M

We know that this is a solution. The molarity indicates that amount of solute was dissolved in a solvent.

To find the number of moles of solution;

Number of moles = molarity x volume

molarity is the the number of moles of solute in a solution.

 input the variables;

    Number of moles = 0.5 x 1 = 0.5moles

Mass of NaCl:

  Mass of NaCl = number of moles x molar mass

molar mass of NaCl = 58.54g/mol

  Mass of NaCl = 0.5 x 58.54 = 29.27g

learn more:

Molarity brainly.com/question/9324116

#learnwithBrainly

8 0
3 years ago
4. Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited number
densk [106]

no it is not possible, because they both have the same number of valence electrons in each element. in a compound you are supposed to have two or more elements that have different numbers of valence electrons so when put together they for a compound.

3 0
3 years ago
Is bleach liquid starch? <br> Yes or No
Jobisdone [24]

Answer:

O it's not

Explanation:

Have a great day!

8 0
2 years ago
Why is potassium iodine electronically neutral
AfilCa [17]
They would be neutral if their electonegativity difference was 0
8 0
3 years ago
Read 2 more answers
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