C. Identify the cations that precipitate with hydrochloric acid and do not redissolve in the presence of ammonia.
D. Identify the cations that precipitate upon addition of two or three drops of sodium hydroxide but redissolve upon addition of excess sodium hydroxide.
E. Identify the cations that precipitate upon addition of two or three drops of sodium hydroxide and are not affected by additional sodium hydroxide.
F. Identify the cations that precipitate upon addition of two or three drops of aqueous ammonia but redissolve upon addition of excess aqueous ammonia.
G. Identify the cations that precipitate upon addition of two or three drops of aqueous ammonia and are not affected by additional aqueous ammonia.
H. What simple test would distinguish Ag+ and Cu2+ ?
I.Give two reasons why we fill the gas generator test tubes almost to the top with chemicals.
J. Write a balanced equation for the reaction between O2 and H2.
K. . What is the function/purpose of the bromothymol blue in the CO2 experiment?
L. Bromothymol blue is blue in the presence of basic solutions, and yellow in the presence of acidic solutions. If your solution is a murky green, what might you assume about the solution?
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