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Chemistry: Post your doubts here!
There is a lone pair of electrons on the N, so there are 2 bond pairs and 1 lone pair. The closest angle would be 120 degrees. -
Chemistry: Post your doubts here!
I'll just add on to Q40 since Ahmed Aqdam has addressed the other questions. Q40. Requires a bit of reasoning, if 1 mole of monomer join together, we will get less than 1 mole of polymer. If we end up with 1 mole of polymer in the end, it means none of the monomer has joined to any other! Its... -
Chemistry: Post your doubts here!
w06qp1 Q3. P is option A Ca is option B Kr is option D So that leaves element X as option C. Q4. Use any of the alkane as an example and construct a balance equation for complete combustion, for here, I'll use CH4 I prefer to use table, but not sure if the alignment shows when typed out. CH4... -
Chemistry: Post your doubts here!
w12qp13 Q29. Since methanoic acid is used, the alcohol would be butanol. HCOOC4H9 There are 4 isomers of butanol, so depending on which isomer of butanol we used, we have 4 possible structural isomers of esters. If we use butan-2-ol, the ester also have a chiral carbon and so an extra opital... -
Chemistry: Post your doubts here!
Q16. Barium carbonate does not dissolve in water, but reacts with acid to form a soluble Ba2+. BaCl2 is soluble in both water and acid. Ba(OH)2 soluble in both BaSO4 insoluble in both Q24. Steamy fumes with PCl5 means there COULD be OH group, either as OH alcohol or COOH acid. We are not sure... -
Chemistry: Post your doubts here!
Possible. Or they could also remain as gas. The idea is they have attraction forces which causes them to occupy a lower volume than expected. This goes against the assumption that idea gases have no attraction forces among each other. -
Chemistry: Post your doubts here!
Q15. When reacted with conc H2SO4 NaCl --> HCl NaBr --> HBr --> Br2 NaI --> HI --> I2 so H2SO4 oxidises Br- and I-. Q31. Answer seems to be B instead of A? Al in AlCl3 has 3 bond pairs, 0 lone pairs. Trigonal planar C in CH+ has 3 bond pairs, 0 lone pairs. Trigonal planar P in PH3 has 3 bond... -
Chemistry: Post your doubts here!
The smaller ones are soluble, but as the alkyl length gets longer (more than 5 C) it gets less soluble. -
Chemistry: Post your doubts here!
Focus on the H atoms across the C=C bonds. B is trans and D is cis isomer. -
Chemistry: Post your doubts here!
PH3 should be trigonal pyramidal. -
Chemistry: Post your doubts here!
Q2o. IF all carbons are single bonds, CnH2n+2O, C20H42O (20 carbons , 42 hydrogen, 1 oxygen) Since 1 aldehyde group is present, subtract 2 H, C20H40O (20 carbons , 40 hydrogen, 1 oxygen) Since it contains a ring, subtract another 2H, C20H38O (20 carbons , 38 hydrogen, 1 oxygen) Since retinal... -
Chemistry: Post your doubts here!
Q14. Group II nitrates decompose based on the equation below: 2 X(NO3)2 (s) --> 2 XO (s) + 4 NO2 (g) +O2(g) Mass of XO = 1.47 g Moles of XO = 1.47/ (Mr of X + 16) Mass of X(NO3)2 = 3 g Moles of X(NO3)2 = 3/(Mr of X + 124) since moles of X(NO3)2 = moles of XO 3/(Mr of X + 124) = 1.47/ (Mr of... -
Chemistry: Post your doubts here!
This is for everyone who is doing so. I'm sorry that you have the idea that I have not answered any of your doubts. -
Chemistry: Post your doubts here!
Guys, please don't keep copying and pasting your questions. Its very hard to keep track. If there are questions you already understood while waiting, its better to update your original posts. Be patient. -
Chemistry: Post your doubts here!
s11qp12 short answer, cross the Al3+ and C4- charges, though it might not always work. Long answer Understand that whatever moles of C we have at the beginning will eventually be the same number of moles of C in CO2 at the end. Let x and y be the ratio of Al and C respectively. AlxCy... -
Chemistry: Post your doubts here!
Hmm...perhaps you try drawing out the 2 alcohols, so I can check how you visualise the structures. -
Chemistry: Post your doubts here!
Two kinds of bonding, covalent bonds between I and I atoms, intermolecular bonds among I2 molecules. -
Chemistry: Post your doubts here!
I'll limit the discussion to substitution of halogen alkanes, might be a better idea if you google youtube videos to visualise easier. sN2 usually for primary halogen alkanes nucleophile forms bond with partial positive carbon at the same time as bond between halogen (X) and carbon is broken... -
Chemistry: Post your doubts here!
s07qp1 Q26 and 34, I've already answered in post #9717 w07qp1 Q9. This is probably what prompted me to do the youtube videos, cause this question I've typed out at least 5 times in the last 2 days. :eek: moles of SO3 2- : moles of electrons : moles of metal 0.0025 : ? : 0. 005 1 :? : 2 1 ... -
Chemistry: Post your doubts here!
Hi there, please type the answers next to the questions to make it easier to reply. Q23. Products formed CH3CH2OH, CH3CH2COONa % of CH3CH2OH = Mr of CH3CH2OH/(Mr of CH3CH2O- + Mr of CH3CH2COONa) x 100% = 46/(46+96) x 100% = 32.3% Q30. Statement 2: True PV=nRT n/V=P/RT density =P/RT Therefore...