Can I ask if you remember the liters of water produced in this question, can you tell me please? Then I might be able to help?
Thanks
Search found 24 matches
- Sun Dec 10, 2017 6:40 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Exam HCl and NaOH question?
- Replies: 3
- Views: 477
- Sun Dec 10, 2017 6:38 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Acids and Bases
- Replies: 1
- Views: 291
Acids and Bases
On the last question with Hcl and NaOH was the liters of water 1.00 L? If we are not supposed to ask about the final now, please ignore this question. But was it 1.00 L or something else?
Thanks for helping
Thanks for helping
- Mon Dec 04, 2017 5:43 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Equation derived from the conjugate seesaw
- Replies: 2
- Views: 184
Re: Equation derived from the conjugate seesaw
Hello,
Usually both are negative since there are log equations involved. So negative log of pKa and negative log of pKb are supposed to add up to 14 however, what you are thinking of is Ka and Kb which are not negative and add up to Kw or 1.00 x 10^-14
Hope this helps
Usually both are negative since there are log equations involved. So negative log of pKa and negative log of pKb are supposed to add up to 14 however, what you are thinking of is Ka and Kb which are not negative and add up to Kw or 1.00 x 10^-14
Hope this helps
- Mon Dec 04, 2017 5:34 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Proton Transfer Reactions
- Replies: 2
- Views: 201
Re: Proton Transfer Reactions
Hello, Sodium is not integral to the reaction. There are plenty of examples where chemicals are not important, one is the dissociation equilibrium of a weak acid where water is not important even though it is mentioned. They are called spectator ions which you can look up to understand why some ions...
- Mon Dec 04, 2017 5:31 pm
- Forum: Dipole Moments
- Topic: Dipole moments on test 4
- Replies: 2
- Views: 253
Re: Dipole moments on test 4
Hello,
The easy answer is that dipole moment is different from polarity. Dipole moments are based upon lone pairs, all the chemicals you mentioned lack lone pairs and this less pull on the other atoms in the structure. Only if there are lone pairs they can have a dipole moment, does that help?
The easy answer is that dipole moment is different from polarity. Dipole moments are based upon lone pairs, all the chemicals you mentioned lack lone pairs and this less pull on the other atoms in the structure. Only if there are lone pairs they can have a dipole moment, does that help?
- Mon Dec 04, 2017 5:18 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Neutralization reactions
- Replies: 4
- Views: 249
Re: Neutralization reactions
Zinc has a plus 2 charge that’s why there are 2 hydroxides ok??
- Mon Dec 04, 2017 5:16 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Chem. Equilibrium Part 3 Post-Assess. #19
- Replies: 3
- Views: 347
Re: Chem. Equilibrium Part 3 Post-Assess. #19
Hello, Ok this might be confusing but please bear with me. First you have to convert moles to molarity by dividing by the 10 liters. Secondly, since nitrogen has a 2 as a coefficient you have to square the initial molarity of nitrogen you solved above. Also you have to square the x for the change fo...
- Mon Dec 04, 2017 4:59 pm
- Forum: Conjugate Acids & Bases
- Topic: Strong vs Weak Acids/bases
- Replies: 4
- Views: 362
Re: Strong vs Weak Acids/bases
Hello, Strong acids always completely dissociate. Strong acids have weak bonds and want to separate. Only if water is the solvent then they will dissolve completely so .10 M of Hcl will be .10 M H plus and .10 M cl- but weak acids don’t dissociate very well. Weak acids have this ionization constant ...
- Mon Dec 04, 2017 4:54 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Table 11.2
- Replies: 4
- Views: 247
Re: Table 11.2
Hello,
There are many K’s even ones for dissolving called Ksp which is for dissolving. Also It is different than Kc also Kp is different as there is a calculation to convert Kc to Kp so they can be different.
Hope this helps
There are many K’s even ones for dissolving called Ksp which is for dissolving. Also It is different than Kc also Kp is different as there is a calculation to convert Kc to Kp so they can be different.
Hope this helps
- Mon Dec 04, 2017 4:52 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Sig Figs for Calculating pH and pOH
- Replies: 4
- Views: 297
Re: Sig Figs for Calculating pH and pOH
Hello,
Usually the pH is calculated by counting two digits after the decimal, usually the sig figs will be counted after the decimal place so 1.66 has two significant figures.
Hope this helps
Usually the pH is calculated by counting two digits after the decimal, usually the sig figs will be counted after the decimal place so 1.66 has two significant figures.
Hope this helps
- Mon Dec 04, 2017 4:50 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Neutralization reactions
- Replies: 4
- Views: 249
Re: Neutralization reactions
Hello,
The equation is that you add zinc hydroxide to nitrous acid which is HNO2, when you add the base and acid together, it will create a neutralization reaction which will result in one h2o molecule and zinc nitrite.
Hope this helps
The equation is that you add zinc hydroxide to nitrous acid which is HNO2, when you add the base and acid together, it will create a neutralization reaction which will result in one h2o molecule and zinc nitrite.
Hope this helps
- Mon Dec 04, 2017 4:46 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Zinc Nitrate
- Replies: 2
- Views: 203
Re: Zinc Nitrate
Hello, So what you basically do is draw brackets and draw nitrate in one bracket and draw zinc in another bracket. There are 2 nitrates for every zinc so add a superscript of 2 to thenotratr bracket. This is similar to (NH4)SO4 that we covered in class had a similar formula or Lewis structure. Hope ...
- Mon Dec 04, 2017 4:42 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Conjugates
- Replies: 3
- Views: 332
Re: Conjugates
Hi, No that’s not true, a weak base will have a strnot mg base as it’s conjugate, since a strong base will have a weak conjugate acid so vice versatile is true. To answer below strong acids are unstable somewhat and want to separate into ions as they have weak connections. This, Cl- is more stable w...
- Mon Dec 04, 2017 4:38 pm
- Forum: Bronsted Acids & Bases
- Topic: Identifying an acid vs. a base
- Replies: 1
- Views: 165
Re: Identifying an acid vs. a base
Hi, The main thing is that the equation should be there, when given the equation one can determine which chemical gains a proton or loses one. The acid loses an atom or proton and the base gains one. Bases usually contain OH minus and contain alkali earth or alkali metals. Acids contain anions like ...
- Mon Dec 04, 2017 4:24 pm
- Forum: Dipole Moments
- Topic: Polar molecules [ENDORSED]
- Replies: 2
- Views: 227
Re: Polar molecules [ENDORSED]
Hi, For this question, usually the molecules that are blondes to themselves or if they are hydrocarbons like methane and butane which only consist of carbon and hydrogen so thy were not polar. Also, dipole moments are different than polarity, all molecules that were not hydrocarbons or bonded to its...
- Mon Dec 04, 2017 4:21 pm
- Forum: Naming
- Topic: Using ion in names
- Replies: 2
- Views: 186
Re: Using ion in names
Dear student, Only if you write the formula you have to have to right the ion name, because it matters if it is on the formula, it will determine how you name it. For example: [Fe(NH3)Cl4]- where the name would be diammine dichloro ferrate(III) where the ion name is not there in the name but it is p...
- Mon Dec 04, 2017 4:02 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Kw= [H30+]*[OH-]
- Replies: 4
- Views: 286
Re: Kw= [H30+]*[OH-]
Dear student,
I don’t think water is counted because it is a solvent and a liquid. Usually in a equilibrium equation liquids and solids are omitted. Only aqueous compounds can be used in the K for equilibrium. Therefore only the ions h3o plus and OH- are included.
I don’t think water is counted because it is a solvent and a liquid. Usually in a equilibrium equation liquids and solids are omitted. Only aqueous compounds can be used in the K for equilibrium. Therefore only the ions h3o plus and OH- are included.
- Mon Dec 04, 2017 4:00 pm
- Forum: Biological Examples
- Topic: Cooridnate compound dentate
- Replies: 2
- Views: 308
Cooridnate compound dentate
Hello chemistry community,
I have a question, how do you know if given a formula of a coordinate compound not written in parentheses like (CH2N(CH3COO)2)2 how do you know what dentate they are? I’m not able to understand?
I have a question, how do you know if given a formula of a coordinate compound not written in parentheses like (CH2N(CH3COO)2)2 how do you know what dentate they are? I’m not able to understand?
- Wed Nov 29, 2017 3:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular v Electron Arrangement
- Replies: 2
- Views: 202
Re: Molecular v Electron Arrangement
Hi, so for this question:
Line pairs are counted as bonds in the electron structure so if it is ax2e2 the electron structure is ax4 so tetrahedral. However, molecular is based on shape not actual electron number...hope this helps!
Line pairs are counted as bonds in the electron structure so if it is ax2e2 the electron structure is ax4 so tetrahedral. However, molecular is based on shape not actual electron number...hope this helps!
- Wed Nov 29, 2017 2:54 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Energy levels
- Replies: 2
- Views: 262
Re: Energy levels
Hi!
The energy levels are based on the highest orbitals, the higher orbitals have more energy, and it can be determined by the order of the periodic table nitrogen then oxygen and then flourine. Hope this helps!
The energy levels are based on the highest orbitals, the higher orbitals have more energy, and it can be determined by the order of the periodic table nitrogen then oxygen and then flourine. Hope this helps!
- Tue Nov 07, 2017 3:44 pm
- Forum: Octet Exceptions
- Topic: Beryllium exception
- Replies: 4
- Views: 554
Re: Beryllium exception
This is only because beryllium only has 4 valence electrons, it does not have enough electrons in order to fulfill the octet rule, therefore it does not follow the octet rule due to limited electrons.
- Tue Nov 07, 2017 3:10 pm
- Forum: Lewis Structures
- Topic: Exceptions to octet rule?
- Replies: 6
- Views: 447
Re: Exceptions to octet rule?
The main exception to the octet rule is that the d-orbitals can be used to prove that electrons can hold more than 8 electrons, due to the d orbital having 10 electrons and the f orbital having even more. Also, atoms like lithium, boron, and beryllium have too few valence electrons to fulfill the oc...
- Tue Nov 07, 2017 3:05 pm
- Forum: Trends in The Periodic Table
- Topic: Exceptions to Trends
- Replies: 2
- Views: 192
Re: Exceptions to Trends
There are also exceptions to electron affinity between C and N, as Carbon as the higher electron affinity, even though it is expected for nitrogen to have a higher electron affinity, this is due to the orbitals being half filled or not half filled.
- Wed Oct 04, 2017 11:10 am
- Forum: Balancing Chemical Reactions
- Topic: Balancing Process
- Replies: 11
- Views: 581
Re: Balancing Process
It’s always just easy to balance elements that are not all over the place. For example balancing phosphrous would be easier than oxygen in this case...