Identify the major ions present in an aqueous LiOH solution. A) Li^+, O^2-, H^+
ID: 511787 • Letter: I
Question
Identify the major ions present in an aqueous LiOH solution. A) Li^+, O^2-, H^+ B) Li^+, OH^- C) LiO^-, H^+ D) Li^2+, O^-, H^- E) Li^-, OH^+ If aqueous solutions of lead(II) nitrate and sodium sulfate, which insoluble precipitate is formed? A) PbS B) Na_2NO_3 C) Pb_2SO_4 D) PbSO_4 E) NaNO_3 Which solution is basic? A) pH = 3.00 B) pH = 1.00 C) pH = 10.00 D) pH = 4.00 E) pH = 5.00 Which chemical equation describes an acid-base neutralization reaction? A) LiOH (aq) + HNO_3 (aq) rightarrow LiNO_3 (aq) + H_2O(l) B) CaBr_2 (aq) + H_2SO_4 (aq) rightarrow CaSO_4 (s) + 2HBr(g) C) 2KBr (aq) + Cl_2 (g) rightarrow 2KCl (aq) + Br_2 (l) D) 2SO_2 (g) + 2H_2O(l) + O_2 (g) rightarrow 2H_2SO_4 (aq) E) 2Al (s) + 3H_2SO_4 (aq) rightarrow Al_2 (SO_4)_3 (aq) + 3H_2 (g)Explanation / Answer
22) LiOH -----> Li+ + OH-
LiOH dissociate in aqueous solution to give Lithium ion and hydroxy ion.
Answer is B
23) Pb(No)3 + Na2SO4 -------> PbNO3 + 2NaNO3
Lead nitrate and sodim sulfate reacts to give precipitates of lead sulfate and sodum nitrate. As lead sulfate is insoluble in less soluble it gets precipite out.
Answer is D
24) On pH scale of 1 to 14, the pH above 7 till 14 is basic and 1 to 7 is acidic. Hence answer is C) 10.0
25) Acid base reaction are those where acid and base react to for respective conjugate base and conjugate acid.
Option A has LiOH as base and Nitric acid HNO3 is acid. Both reacts with each other to form LiNO3 and water their respective conjugate acid and conjugate base.
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