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
7

A student titrates an unknown amount of potassium hydrogen phthalate (KHC8H4O4, abbreviated as KHP) with 21.30 mL of a 0.1161 M

NaOH solution. KHP (molar mass
Chemistry
1 answer:
schepotkina [342]3 years ago
7 0

Answer:

0.5050g of KHP were titrated

Explanation:

<em>... (molar mass = 204.22 g/mol) has one acidic hydrogen. What mass of KHP was titrated (reacted completely) by the sodium hydroxide solution?</em>

<em />

The KHP is a salt used as standard to determine concentrations of bases as NaOH solutions. The reaction that occurs is:

KHP + NaOH → KP⁻Na⁺ + H₂O

<em>Only 1 hydrogen is acidic. Only 1 hydrogen reacts with NaOH</em>

In the reaction you can see that 1 mole of NaOH reacts per mole of KHP

To find mass of KHP we need to determine its moles finding moles of NaOH (The moles of KHP required to reach endpoint = Moles of NaOH added):

<em>Moles NaOH:</em>

21.30mL = 0.02130L * (0.1161mol / L) = 0.002473 moles of NaOH = Moles KPH

With mass of KHP and its molar mass we can solve the mass of KHP:

0.002473 moles of KHP * (204.22g/mol) =

<h3>0.5050g of KHP were titrated</h3>
You might be interested in
The enthalpy change for the explosion of ammonium nitrate with fuel oil is –7198 kJ for every 3 moles of NH4NO3. What is the ent
anastassius [24]

Answer:

−2399.33 kJ

Explanation:

If NH₄NO₃ reacts with fuel oil to give a ΔH of -7198 for every 3 moles of NH₄NO₃

What is the enthalpy change for 1.0 mole of NH₄NO₃ in this reaction

∴ For every 1 mole, we will have \frac{1}{3} of the total enthaply of the 3 moles

so, to determine the 1 mole; we have:

\frac{1}{3}*(-7198kJ)

= −2399.33 kJ

∴ the enthalpy change for 1.0 mole of NH₄NO₃ in this reaction = −2399.33 kJ

7 0
3 years ago
According to the text, which amino acid(s) contains a side chain..
solniwko [45]

Answer:

(b) that is hydrophobic

Explanation:

e.g, alanine

Cause, Alanine possess hydrophobic side chain and the most appropriate answer is (d) part......

Alanine is an aliphatic amino acid, because the side-chain connected to the α-carbon atom is a methyl group (-CH3), alanine is the simplest α-amino acid after glycine. The methyl side-chain of alanine is non-reactive and is therefore hardly ever directly involved in protein function..

Hope it will help you☺☺☺☺☺

3 0
3 years ago
Read 2 more answers
HNO3 Express your answers as ions separated by a comma.
erastovalidia [21]
In this item, it is assumed that we are to express the given compound in their ionic form. To be able to determine as to what ions this compound will dissociate into, we have the chemical reaction.

                     HNO3 --> H⁺  + NO₃⁻

Hence, the ions are H⁺, NO₃⁻. 
4 0
3 years ago
Which would least strongly attract electrons from other atoms in a compound?
sergey [27]
The concept we are looking for here is electronegativity. This concept is a measure of how strong an atom or element can attract a pair, that is bonding, of electrons to itself. 

Fluorine is the element or atom of the greatest electronegativity. Electronegativity would increase as we move left to right of the periodic table. 

 
4 0
3 years ago
Is distilled water ionically bonded
evablogger [386]
Yes it is.. because
8 0
3 years ago
Read 2 more answers
Other questions:
  • How do I convert 12 g into kg in a formula
    8·1 answer
  • True or False : During neap tides, low tides are highest because the Sun, Earth, and the Moon form a right angle.
    8·2 answers
  • Select each of the reactions and observe the reactants taking part in the reactions. Suppose you are carrying out each of these
    11·1 answer
  • If you had a total sample of 35 candium- 15 M&amp;Mium, 12 Skittlitium and 8 MPeanuttium. What is the relative abundance for eac
    10·1 answer
  • Consider the chemical equation in equilibrium.
    14·2 answers
  • How many molecules are there in 24 grams of HSO₃?
    15·1 answer
  • Hey, it'd be really cool if someone could help me with this-- 15 pts!
    5·1 answer
  • A neutral atom has a ground state electron configuration of 1s22s22p63s2.The neutral atom becomes an ion during a chemical react
    6·1 answer
  • Where did you walk? what did you find most enjoyable while walking: listening to music, listening to an audio book, or nothing?
    7·1 answer
  • In order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!