Question

4 Answer the following questions about a 1.50 M HCl solution: a. What is the new molarity if exactly 200 mL of the solution is diluted to 1.000 L? b. How many mls of the solution must be diluted to exactly 500 mL to form a 0.100 M HCl solution? C. How many moles of HCl are present in a diluted solution if exactly 100 mL of the original solution are diluted to 2.000 L? 5. Identify the acid and base in each of the following reactions: 3. NH" (aq) + H20 (1) • NHÀ (aq) + H 0° (aq) b. HC,H,O2 (aq) + H,0 (0) 21,0* (aq) + C,H,O, (aq) C. HF (aq) + NaOH(aq) - NaF (aq) + H20 (1) 6. Write balanced net ionic equations for the following reactions: a. NaC,H,O, (aq) + HCl(aq) → b. KCl (aq) +Hg, (NO), (aq) → C. Ni(NO), (aq) + Cuso, (aq) - 7. Using solubility rules or reasonable extensions of them, predict whether each of the following compounds is soluble in water: a. PbBr; b. CSC C. Cu(C,H,O2)2 d. Mn(OH), e. Ca,(PO.)

Answer 1

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لايع الولايل 4 a Dilection Eqn in terms of Molarity is - where Mi= Initial Molarity = 1.50 M V = Initial Volume = 200ml - Ma= final Molarity = ? - V = final Volume = 1.000/= 1000 ml e Mg = MIVI - 1.50 M X 200 mL = 0.3M V 1000 ml b Mi= 1.50 M Vi=? Mg = 0.100M V = 500 me - Vi= Mova - 0.100 Mx 500 me- 33.3ml - Mi 1. 50 M - Molarity . No of moles – Molarity x Volume Closuresponding to that = 7.50 mol x 100 mk °(M= mol = 1.50 mol x 0.100L (As 12 = 1000 ml) = 0.15 mol 2 4 Vụ (44) + H0 (2) - MH, (ag) + Hot(aq) Acid is the species that gives 4+ ions and base is the species that accepts tt ions . NHyt is the Acid and Hoo is the base While NH3 is conjugate base of NHut and H₂O + is conjugate acid of H₂ Q.