Please Help ??????????????

Question

I need to find an Image of Acid/Base in water.
What color would u expact the litmus paper to turn with RAINWATER, AMMONIA?
Predict the products if u add KCl to AgNO3?
What hapen if u add Fe metal to a solution of Zn^+2 ions?
How does a battery works using oxidation/reduction reaction?

Answer 1

1) Litmus is red in acid, blue in base...so it would turn red in rainwater (which is sl acidic, more or less depending upon atm contamination), blue in ammonia.
2) AgCl precipitates out...KCl + AgNO3--->AgCl(ppt) + K+ + NO3-
3) Zn is more active than Fe, so it plates out at the expense of Fe...Zn(+2) + Fe--->Zn(ppt) + Fe(+2)
4) Depends on the type of battery...for the lead/acid type it is a reversible reaction between PbO in the plates and the H2SO4 electrolyte (in overly simple terms)
.....Discharge: 2H(+) + SO4(-2) + PbO--->PbSO4 + H2O
.....Charge: PbSO4 + H2O--->PbO + 2H(+) + SO4(-2)

Answer 2

Litmus paper turns red in acidic solutions like rainwater (it is slightly acidic because of pollution, hence "acid rain") and blue in basic solutions like ammonia.

Adding KCl to AgNO3 should give AgCl2 and K2NO3, although I'm not sure how soluble those products are--it might give separate ions instead of salts.

I'm afraid I don't know the answers to your other questions off the top of my head.