question 6. select one metal which would displace Sn from a compound and form metallic tin (Sn). (makes no sense to me)
posible answers:
1. Ag
2. Cr
3. Cu
4. Hg
question 10.
predict the products of the reaction. HNO3 + KCl
possible answers:
1. ClNO3, K2O
2. KH, NO3Cl
3.KHCl2
4. KNO3, HCl
2006-12-16 14:14:39 · 3 answers · asked by imigeofinvsible 1 in Science & Mathematics ➔ Chemistry
question 6 should be 3. Cu because it is more reactive than Sn. (You have to look at a chart of reactivity to actually know)
Question 10 is 4. KNO3, HCl
H and K are both positively charged ions, NO3 is a negatively charged polyatomic ion so it won't break apart, and Cl is a negatively charged ion.
Therefore, H and K won't bond together, ruling out 2. NO3 won't break apart, so that rules out 1, and 3 is just weird.
2006-12-16 14:22:11 · answer #1 · answered by Lilovacookedrice 3 · 0⤊ 0⤋
Yea, I would go with Copper and this is why.
Copper is the most electronegative metal in the list. On the preriodic table Cu is further up and to the right than the others on the list. This means that copper is most reactive. Mercury is not very reactive at all (it can kill you...but that's not what you're asking. lol. sorry).
Yep, Copper.
For question 10, 4 is the most logical answer:
HNO3 + KCl --> KNO3 + HCl
it looks like a double displacment will occur -- they switch partners. A good way to look at it is to look at the charges of each group/element: H has +1, NO3 has -1, K has +1 and Cl has -1.
The charges must be balanced (i.e add up to zer0). So usually negatives go with positives. The only combination in the list that has balanced negative and positive charges is 4
2006-12-16 22:45:10 · answer #2 · answered by Atello 2 · 1⤊ 0⤋
Q6) 3
Q10) 4
2006-12-17 03:24:12 · answer #3 · answered by arbus 2 · 0⤊ 0⤋