Question

4) How many Amps would be required to plate out 25.00 gram of Tin onto a some iron if the current were passed through a solution of Sn(NO3), for 3.00 hours? 5)What is the oxidation state of arsenic in HAS04 6) How many electrons are gained or lost when Mn(OH)2 becomes MnO2? SO; becomes H2SO4 7) Use the half reaction method to balance the following redox equation: CIO3- (aq) becomes Cl2 (g) and Cr+ (aq) becomes Cr20(aq) in acidic solution: What is the emf of the cell? Is it spontaneous? Reason

Answer 1

3 what is the ine in. HHSO4 - the oxidation state of w oxidatio 0-4 Hasou ' - 1X+56 + 4x(-3)=-2 AS C1+2+(-) --2 22-2+1 rast5 / nsas +5 oxidation State in HASOU But im HASOy = f** HEO = 1X2+26-41-0 - x +1-820 23 +7] ng +7 Oxidation Etate in HASOY 6) How many eledrons ales gained er? Lost . 9 Mn Colla becomes and In film (OH)2, Mn In +2. In Mnoz Mn in ty. - So Mm. lost a elations from Mr Colla to Mroa b) 50₂ becomes H2SO4 In SO3 , 5 m +6. In Ha Sou sim. to. so mo elections lost from 503. to H2SO4.

7) Clozcaq) beomes cola in acidie modiventa Quelozcaq) + lanteaq) toee colzlg) +6H20 * a koloz + 12HCl -> scitz +6 120 + 2kal. Carzo 1 2 + 14h2 tr ut 2+² +21H20 Cr207 + lust at Geo - zext 3+ 7H2O 2 what is Emf of a cell EKF Electro motive force. It is the Energy Provided by a call. Per collomb of charge Parsing Through It oil It is equal to the potential difference. acrase the tuminal of the cell. when no current is flowing It is spontaneous when it is positive. & Du is negatre . le Duo-nFE. where Eremf F = Faraday ning of es our Gibbs free Energy se é is positive sha-ve. . Reaction is spontaneous.