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New Question

11 months ago

0 Follower 8 Views

V
Vishal Baghel

Contributor-Level 10

pH=3.44

We know that,

pH=−log [H+]

∴ [H+]=3.63×104

Then, Kb= (3.63×104)2 / 0.02 (? concentration =0.02M)

⇒Kb=6.6×106

Now, Kb=Kw / Ka

⇒Ka=Kw / Kb=1014 / 6.6×106=1.51×109

New Question

11 months ago

0 Follower 3 Views

V
Vishal Baghel

Contributor-Level 10

Since NaNO2 is the salt of a strong base (NaOH) and a weak acid (HNO2);

NO2+ H2O ↔ HNO2 + OH

Then, Kb= [HNO2] [OH] / [NO2]

⇒ Kw/ Ka = (10−14) / (4.5×10−4)

= 0.22×10−10

Now, if x moles of the salt undergo hydrolysis, and then the concentration of various species present in the solution will be:

  [NO2]= 0.04−x; 0.04

[HNO2]= x

[OH]= x

Kb= x2 / 0.04

= 0.22×10−10

 x2= 0.0088×10−10

x= 0.093×10−5

∴ [OH]= 0.093×10−5 M

[H3O+]=10−14 / 0.093×10−5=10.75×10−9 M

⇒ pH=

...more

New Question

11 months ago

0 Follower 4 Views

H
Himanshu Singh

Contributor-Level 10

No, students must have completed their undergraduate degree in Architecture with a minimum of 55% aggregate or a CGPA of 6.0 to be eligible for admission to the MArch programme at MIT School of Architecture.

New Question

11 months ago

0 Follower 2 Views

V
Vishal Baghel

Contributor-Level 10

c=0.1M 

pH= −log [H+]

=> 2.34 = −log [H+]

So, −log [H+]= 2.34

=> [H+]= 4.5×103

Also,

[H+]= cα

=>4.5×10−3= 0.1×α

=> α=4.5×10−2= 0.045

Then,  

Ka = α2/c = (45×103)2/ 0.1

=202.5×106

=2.02×10−4

New Question

11 months ago

0 Follower 3 Views

H
Himanshu Singh

Contributor-Level 10

The final step in securing admission is attending the counselling session, submitting all necessary documents, including a physical fitness certificate, and paying the tuition fee of INR 2.6 Lacs to confirm the seat.

New Question

11 months ago

0 Follower 23 Views

V
Vishal Baghel

Contributor-Level 10

Let the degree of ionization of propanoic acid be α. Then, representing propionic acid as HA, we have:

HA         +        H2O ⇔ H3O+    +    A

(.05−0.0α)≈0.5                         0.05α      0.05α

Ka= [H3O+] [A] / [HA]

    = (0.05α) (0.05α) / 0.05

    = 0.05α2

=> α = (Ka /0.05)1/2

 

...more

New Question

11 months ago

0 Follower 3 Views

H
Himanshu Singh

Contributor-Level 10

The selection for the MArch programme is based on the submission of the application form along with the SOP. Applicants are shortlisted based on their SOP, followed by an interview. The final merit list is declared after the interview.

New Question

11 months ago

0 Follower 5 Views

Shiksha Ask & Answer
Tasneem Hoda

Contributor-Level 10

US News and world Report is an American media company that provides global, national, regional, and subject based rankings for top universities around the world. The US News and World Reort Global Universities rankings of Deakin University are given in the table below:

Year US News Global Universities Rank 
2022#218
2023#217
2024#177

New Question

11 months ago

0 Follower 4 Views

S
Shailja Rawat

Contributor-Level 10

Once the SRM University has closed the application window, the university's selection committee commences the screening process. In the screening process, registered candidates are screened and shortlisted based on their performance in the entrance exams (GATE/SRMJEE PG).

After that, shortlisted students are invited for an interview process. Following which, M.Tech seats are allocated based on the candidate's performance in the accepted entrance exam and the interview process.

New Question

11 months ago

0 Follower 4 Views

H
Himanshu Singh

Contributor-Level 10

 To apply for the MArch programme at MIT School of Architecture, visit the official website of MIT ADT University. Click on the "Apply Now" option, fill out the application form, submit your Statement of Purpose (SOP), and pay the required application fee.

New Question

11 months ago

0 Follower 6 Views

V
Vishal Baghel

Contributor-Level 10

Solubility of Sr (OH)2=19.23g/L

The molecular weight of Sr (OH)2  is 87.6 + 2 (17)=121.6

Then, concentration of Sr (OH)2=19.23 /121.63M=0.1581M

Sr (OH)2 (aq)→Sr2+ (aq)+2 (OH) (aq)

∴ [Sr2+]=0.1581M

  [OH]=2×0.1581M=0.3126M

Now, Kw= [OH] [H+]

=> [H+] = 1014 / 0.3126

=> [H+]=3.2×1014

      ∴pH= 13.495

New Question

11 months ago

0 Follower 8 Views

M
Mohit Singh

Contributor-Level 7

IIITM Gwalior cutoff for MBA course is based on CMAT scores followed by the counselling round, which was concluded with a single round.  According to the IIITM Gwalior cutoff 2024, the closing percentile for PGDM course stood at 85 for the General AI category candidates. Similarly, for the OBC AI category candiates, the required rank as per the cutoff stood similar at 85.

New Question

11 months ago

0 Follower 1 View

A
Aarushi Srivastava

Contributor-Level 8

As per the historical data of the university's alumni, most of the Villanova University graduates get placed in industries such as:

Business Development
OperationsFinance
EngineeringEducationHealthcare Services
Information TechnologySalesHuman Resources
Community and Social ServicesResearchConsulting
Media and CommunicationMarketingEntrepreneurship

New Question

11 months ago

0 Follower 2 Views

V
Vishal Baghel

Contributor-Level 10

[KOH]= [K+]= [OH]= (0.561×1000) / (56×200)? =0.050M
[H+]=Kw / [OH]? =10−14 / 0.05? =2.0×10−13
pH=−log [H+]=−log (2.0×10−13)

=12.7

New Question

11 months ago

0 Follower 2 Views

V
Vipra Surbhi

Contributor-Level 8

Yes, Villanova University USA permits international students to work while studying. Overseas students must be mindful of the fact that they can work no more than 20 hours per week while classes are in session and it is essential that this employment does not interfere with a their academic program. During vacations, they can work for unlimited hours.

Know more about part-time jobs in USA for international students.

New Question

11 months ago

0 Follower 7 Views

R
Rashmi Shukla

Contributor-Level 6

The following mistakes should be avoid when using the Simple Present Tense:

  • Forgetting the -s/-es in third-person singular

Example: She go to school. (Incorrect)

She goes to school. (Correct)

  • Using do/does in affirmative sentences

Example: She does eat the dinner. (Incorrect)

She eats dinner. (Correct)

  • Incorrect word order in questions

Example: He goes where? (Incorrect)

Where does he go? (correct)

New Question

11 months ago

0 Follower 2 Views

V
Vishal Baghel

Contributor-Level 10

The hydrogen ion concentration in the given substances can be calculated by using the given relation: pH=−log [H+]

Hence,   [H+] = 10−pH
Milk:  [H+] = 10−6.8 = 1.58×10−7M
Black coffee:  [H+] = 10−5.0 =1×10−5M
Tomato juice:  [H+] = 10−4.2 =6.31×10−5M
Lemon juice:  [H+]=10−2.2 = 6.31×10−3M
Egg white:  [H+]=10−7.8=1.58×10−8M

New Question

11 months ago

0 Follower 3 Views

S
Shailja Rawat

Contributor-Level 10

Yes, SRM University has an online application portal. Thus, students seeking admission into the M.Tech courses can apply online. The steps to apply are as follows:

1. Go to the university's official website and click on the 'Apply Now' tab displaying on the screen.

2. Fill in the required details to make a new student account.

3. Log in to the newly made account and fill out the application form.

5. Pay the application fees of INR 1,400.

6. Submit the form.

New Question

11 months ago

0 Follower 4 Views

V
Vishal Baghel

Contributor-Level 10

a. Human muscle fluid 6.83

pH=6.83

pH=−log [H+]

∴6.83=−log [H+]

[H+]= 1.48 x 107M

b. Human stomach fluid, 1.2:

pH=1.2

1.2=−log [H+]

∴ [H+] = 0.063 M = 6.3 x 10-2 M

c. Human blood, 7.38:

pH=7.38=−log [H+]

∴ [H+]= 4.17 x 108M

d. Human saliva, 6.4:

pH=6.4

6.4=−log [H+]

[H+]= 3.98 x 10−7 M

New Question

11 months ago

0 Follower 13 Views

S
Shikha Dixit

Contributor-Level 7

Yes, IIITM Gwalior allows admission to the MBA course through CMAT. Considering the IIITM Gwalior CMAT cutoff 2024, the needed percentile to get into the institute for the MBA course stood at 85. And, scoring this much of percentile in CMAT exam will easily allow you admission to IIITM Gwalior. 

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