1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svp [43]
3 years ago
10

Potassium hydrogen phthalate is often used to standardize solutions of strong bases. Highly pure samples of this solid weak acid

are readily available. It is stable and easy to use in the laboratory. Calculate the molarity of a sodium hydroxide solution if 23.73 mL are required to titrate 0.5816 g of potassium hydrogen phthalate (C8H5O4K).
Chemistry
1 answer:
Mazyrski [523]3 years ago
3 0

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

You might be interested in
Name three sources of atmospheric carbon dioxide.
quester [9]

The answer is decomposition, ocean release and respiration. hope this helps u :D

4 0
3 years ago
What is nacl monosaccharide disaccharide organic or inorganic?
bonufazy [111]
<span>inorganic Let's look at the choices and see why they work, or don't work. monosaccharide * Otherwise known as a simple sugar. And NaCl is definitely not a sugar of any type. So this is wrong. disaccharide * Complex sugar. And NaCl doesn't qualify either. organic * A definition of an organic compound is one that has carbon in it. NaCl has sodium and chlorine. No carbon at all, so this isn't the right answer. And I wish that organic was an earlier choice, since the sugars mentioned above are organic compounds. inorganic * This is the only possible choice. Salt is not an organic compound since it doesn't have carbon. So it can't be a sugar either. But it can and is inorganic.</span>
8 0
3 years ago
How many moles of chlorine are used up in a reaction that produces 0.35kg of BCl3
maw [93]

4.48 mol Cl2. A reaction that produces 0.35 kg of BCl3 will use 4.48 mol of Cl2.

(a) The <em>balanced chemical equation </em>is

2B + 3Cl2 → 2BCl3

(b) Convert kilograms of BCl3 to moles of BCl3

MM: B = 10.81; Cl = 35.45; BCl3 = 117.16

Moles of BCl3 = 350 g BCl3 x (1 mol BCl3/117.16 g BCl3) = 2.987 mol BCl3

(c) Use the <em>molar ratio</em> of Cl2:BCl3 to calculate the moles of Cl2.

Moles of Cl2 = 2.987 mol BCl3 x (3 mol Cl2/2 mol BCl3) = 4.48 mol Cl2

4 0
3 years ago
There are many different ways to classify matter, but one way is to use only two categories for all matter. All matter can be cl
Strike441 [17]
I would put down C. elements or compounds
3 0
3 years ago
Precipitation _____. occurs equally all over the globe. is the change in state from a gas to a liquid. happens when ice changes
babunello [35]

Precipitation exceeds evaporation over the land.

5 0
2 years ago
Other questions:
  • How to predict the product of Al+Cl2
    12·1 answer
  • How does the law of conservation of mass apply to this reaction: C2H4+3O2----&gt; 2H2O+2CO2
    10·2 answers
  • The box holds 70 cm3 of water. Water has a density of 10 g/cm³. What is the mass of the water
    5·1 answer
  • Give the molecular geometry and number of electron groups for sf4. give the molecular geometry and number of electron groups for
    8·1 answer
  • The energy stored in molecular bonds is called _____.
    12·2 answers
  • Which statement best describes the properties of metals?
    10·2 answers
  • The oxides of nitrogen are very important ingredients in determining urban air pollution. Name each of the following compounds.(
    15·1 answer
  • What is "free" nitrogen?
    13·2 answers
  • Fill in the blanks to complete each statement about the heating of Earth's surface
    10·2 answers
  • An atom that has 13 protons and 15 neutrons is element
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!