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
Svet_ta [14]
2 years ago
10

Consider the reaction:

Chemistry
1 answer:
Flura [38]2 years ago
5 0

Answer:

2 one is the correct one

Explanation:

You might be interested in
Hybridization of NH3​
nadya68 [22]

Answer:

Sp3 hybridization

Explanation:

The NH3 molecule, which consists of one lone pairs and three bond pair of electron on its valance shell due to lone pair bond pair repulsion makes bond angle of 107.5°resulting distorted tetrahedral geometry.

Hybridization =no. of bond pair +lone pair=3+1=4=sp3 hybridization

6 0
3 years ago
How many moles of sodium hydrogen carbonate are present in 2.61 grams of this compound?
Sloan [31]

Molar mass of NaHCO_3

  • 23+1+12+3(16)
  • 36+48
  • 84g/mol

Now

\\ \sf\longrightarrow No\:of\:moles=\dfrac{Given\:mass}{Molar\:mass}

\\ \sf\longrightarrow No\:of\; moles=\dfrac{2.61}{84}

\\ \sf\longrightarrow No\:of\:moles=0.0312mol

7 0
2 years ago
Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.150 M sodium hydroxide with 0.150 M HBr(aq). (
Taya2010 [7]

Answer:

a) pH = 13.176

b) pH = 13

c) pH = 12.574

d) pH = 7.0

e) pH = 1.46

f) pH = 1.21

Explanation:

HBr + NaOH ↔ NaBr + H2O

∴ equivalent point:

⇒ mol acid = mol base

⇒ (Va)*(0.150mol/L) = (0.025L)*(0.150mol/L)

⇒ Va = 0.025 L

a) before addition acid:

  • NaOH → Na+  + OH-

⇒ <em>C </em>NaOH = 0.150 M

⇒ [ OH- ] = 0.150 M

⇒ pOH = - Log ( 0.150 )

⇒ pOH = 0.824

⇒ pH = 14 - pOH

⇒ pH = 13.176

b) after addition 5mL HBr:

⇒ <em>C </em>NaOH = (( 0.025)*(0.150) - (0.005)*(0.150)) / (0.025 + 0.005) = 0.1 M

⇒ <em>C </em>HBr = (0.005)*(0.150) / ( 0.03 ) = 0.025 M

⇒ [ OH- ] = 0.1 M

⇒ pOH = 1

⇒ pH = 13

c) after addition 15mL HBr:

⇒ <em>C </em>NaOH = ((0.025)*(0.150) - (0.015)*(0.150 ))/(0.04) = 0.0375 M

⇒ <em>C </em>HBr = ((0.015)*(0.150))/(0.04) = 0.0563 M

⇒ [ OH- ] = 0.0375 M

⇒ pOH = 1.426

⇒ pH = 12.574

d) after addition 25mL HBr:

equivalent point:

⇒ [ OH- ] = [ H3O+ ]

⇒ Kw = 1 E-14 = [ H3O+ ] * [ OH- ] = [ H3O+ ]²

⇒ [ H3O+ ] = 1 E-7

⇒ pH = 7.0

d) after addition 40mL HBr:

⇒ <em>C</em> HBr = ((0.04)*(0.150) - (0.025)*(0.150)) / (0.04 + 0.025) = 0.035 M

⇒ [ H3O+ ] = 0.035 M

⇒ pH = 1.46

d) after addition 60mL HBr:

⇒ <em>C</em> HBr = ((0.06)*(0.150) - (0.025)*(0.150)) / (0.06+0.025) = 0.062 M

⇒ [ H3O+ ] = 0.062 M

⇒ pH = 1.21

8 0
3 years ago
Read 2 more answers
How much Magnesium is contained in 35.0g of Magnesium Chloride?
Yanka [14]

Answer:

There are

2.52

×

10

23

formula units

7 0
3 years ago
Solubility of a substance increases with rise in temperature?why?​
Dafna11 [192]

Answer:

It is well known to us that the Solubility of solute in a solution increases with the increase in the temperature because, when the temperature increases the molecules of the solvent gain more kinetic energy.

Explanation:

7 0
3 years ago
Other questions:
  • How many liters of O2 gas will be produced at STP from 4 moles of KC1O3
    11·1 answer
  • Help on chem! Will give 30pts!
    9·1 answer
  • What fraction of a sample of 6832ge, whose half-life is about 9 months, will remain after 2.9 yr ?
    7·1 answer
  • Why doesn’t a broken wineglass spontaneously fix itself, from a thermodynamic point of view?
    9·2 answers
  • How can you use Hess’s law to determine a reaction’s enthalpy?
    13·1 answer
  • For the reaction Cl2 + 2KBr → 2KCl + Br2, how many moles of potassium chloride are produced from 4.3 moles of chlorine?
    5·1 answer
  • Two elements that have properties similar to those of the element potassium(K). To those of krypton(Kr)
    6·1 answer
  • PLSSS ILL MARK YOU AS BRAINLIEST!!!!
    10·1 answer
  • In the chemical equation, H202-H2O + O2, the H2O2 is a
    13·1 answer
  • Describe the method of steel manufacture used when removes the impurities carbon, phosphorus and sulfur​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!