What! Your teacher is crazy - half of those things will catch on fire if they are mixed! You should double check to make sure you have them written down right or you could really get hurt!
If you mix HNO3 and HCl you will get a brown gas (don't light it or smell it!). The one that is heavier is the HNO3, because it has more atoms in it. Then, mix the silver one (AgNO3) with KOH - it will give a silver coating to the plastic (search for Tollins Test to see what it looks like). DI water will absorb CO2 from the air and make carbonic acid, so the one that is acidic will be the water.
<span>Good luck!
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To be honest, I can’t really see the question. So please next time just type it out lol
Answer:
8.02 g of HCl could be left over by the chemical reaction
Explanation:
We propose the reaction:
HCl(aq) + NaOH (s) → NaCl (aq) + H₂O (l)
Ratio is 1:1. First of all, we determine the moles of reactants:
14 g . 1mol / 36.45g = 0.384 mol of acid
6.55 g. 1mol / 40g = 0.164 mol of base
If a determined mass of HCl, could be left; this means that the acid is the excess reagent.
For 0.164 moles of NaOH, we need 0.164 moles of HCl.
As we have 0.384 moles, (0.384 - 0.164) = 0.220 moles of acid are left over in the reaction. We convert the moles to mass:
0.220 mol . 36.45 g /1mol = 8.02 g
