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Chemistry: Post your doubts here!
Q14. In a way, this is more of a recall question (although of course students can study the reasons behind the trends). For the solubility , if it helps, recall that Barium sulfate is insoluble. So it gets less soluble for the sulfates down the group. For hydroxides, the solubility is the... -
Chemistry: Post your doubts here!
Focus on individual gases first. Helium exerted 2kPa of pressure when occupying 1dm^3 at start, what pressure did it exert when it occupies 3 dm^3 at the end? Pressure (start) x volume (start) = pressure (end) x volume (end) 2 x 1 = pressure (end) x 3 pressure (end) = 2/3 kPa from helium Neon... -
Chemistry: Post your doubts here!
w08qo1 Q2 Q4. HCO3- total electrons= 1 from H + 6 from C + 3 x 8 from O + 1 from negative charge = 32 Q30. moles of ethanol = 30/46 = 0.652 moles of ethanoic acid =30/60 = 0.5 (limiting) Based on limiting reactant, we expect 0.5 moles of ester = 0.5 x 88 = 44g Since we only obtained 44g... -
Chemistry: Post your doubts here!
This paper I covered in one of the videos, you can take a look. -
Chemistry: Post your doubts here!
D is lowest among all as its P.D-P.D, the rest is hydrogen bonding. -
Chemistry: Post your doubts here!
From half equation, Tl+ --> Tl3+ + 2e So 3 moles of Ti+ loses 6 moles of electrons to 2 moles of VO3+ 1 mole of VO3+ gains 3 moles of electrons (oxidation state will decrease by 3 units) V in VO3+ has original oxidation number of +5. New oxidation number = +5 - 3 = +2 -
Chemistry: Post your doubts here!
my last question, but will work out step by step with your input. Can you work out, moles of Ti+ : mole of VO3+ ? -
Chemistry: Post your doubts here!
Its unlikely you will be expected to create this equation on your own without sufficient information. Linking to the syllabus, we more or less apply the concept of acid (SO2) + base (NH3) --> salt -
Chemistry: Post your doubts here!
Ok, guys. Its past midnight for me. Time for me to log off. If things go well, I might be back for the November batch, perhaps some of you might be kind enough to help them also since you have already ploughed through the questions in your current preparations. All the best for your papers... -
Chemistry: Post your doubts here!
erm, this one is just as easy to google as to type here. :confused: usually H2O is involved, and we might get (NH4)2SO3 -
Chemistry: Post your doubts here!
This paper is included in one of my videos, you can check it if you like and clarify here if still not clear. -
Chemistry: Post your doubts here!
Look for the molecule that can contribute most Cl radicals. Option A. -
Chemistry: Post your doubts here!
Assume it gives SO2 as the main product, though its not suprising should a bit of SO3 should form. Based on syllabus from years ago, a catalyst (vanadium oxide) needed to change SO2 to SO3 during manufacturing of H2SO4 -
Chemistry: Post your doubts here!
w11qp12 Q4. I'll deal with it in grams and converted to moles , you can change back to kg. -
Chemistry: Post your doubts here!
You can check post 9761 https://www.xtremepapers.com/commun...st-your-doubts-here.9859/page-489#post-824743 -
Chemistry: Post your doubts here!
The common question we deal with is Nitrogen monoxide. SO2 --> SO3 and CO-->CO2 does not take place readily in atmosphere. -
Chemistry: Post your doubts here!
For different substances, yes, of course. -
Chemistry: Post your doubts here!
Is this MCQ? Perhaps heat of solution.