which of these ions will turn water acidic?
a. Cr3+
b. none of the above
c. Li+
d. Cl3CCOO-
e. Sr2+
Answer : a) Cr3+
Explanation :
Li+ and Sr2+ are just spectator ions.
Cl3CCOO- is base . so this is not turn water acidic.
[Cr(H2O)6]3+ (aq) + H2O (l) --------------> [Cr(H2O)5.OH]+2 + H3O+ (aq)
here H3O+ is produced . so this will turn water acidic
which of these ions will turn water acidic? a. Cr3+ b. none of the above c....
1.Acidic materials can be identified by which of the following test outcomes: a. They react with metals. b. They feel slippery. c. They may taste bitter. d. They turn litmus paper red. e. All of the above. 2. Which of the following would you expect to turn litmus paper blue: a. chalk b. baking soda c. oven cleaner d. all of the above e. none of the above 3. Which of the following statements about acidic water...
Cr3+ (and other metal ions with a charge ≥ 2) is acidic by virtue of the hydrolysis reaction. Cr3+ + H2O equilibrium reaction arrow Cr(OH)2+ + H+ Ka1 = 10−3.66 [Further reactions produce Cr(OH)2+, Cr(OH)3, and Cr(OH)4−.] a) Considering only the Ka1 reaction, find the pH of 0.019 M Cr(ClO4)3. b) What fraction of chromium is in the form Cr(OH)2+?
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1) Cr3+ (and other metal ions with a charge ≥ 2) is acidic by virtue of the hydrolysis reaction. Cr3+ + H2O equilibrium reaction arrow Cr(OH)2+ + H+ Ka1 = 10−3.66 [Further reactions produce Cr(OH)2+, Cr(OH)3, and Cr(OH)4−.] a) Considering only the Ka1 reaction, find the pH of 0.019 M Cr(ClO4)3. b) What fraction of chromium is in the form Cr(OH)2+? 2) Find the pH of 0.061 M NaCN. (Assume Kw = 1.01 ✕ 10−14.)
can you explain why this is the answer!
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