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(b) The cell reaction for a galvanic cell is given below Cu(s)+2Ag^(+)(aq)rarr Cu^(2+)(aq)+2Ag(s) (i) Write the half-cell reactions at the anode and the cathode (ii) Calculate the value of cell emf under standard conditions; use data from Table 7.1 (iii) Will the reaction be spontaneous as written?
(b) The resistance of a conductivity cell filled with an electrolytic solution is observed to be 180 Omega.If the resistance of 0.1M KCl solution taken in the same cell was found to be 72 Omega calculate the conductivity of the given solution. (Given: The conductivity of 0.1M KCl solution =1.29Sm^(-1) ).
Differentiate between conductance and conductivity of an electrolytic solution.
`(b) Draw the phase diagram for sulphur system and label the sublimation and fusion curves for monoclinic sulphur on it.`
Aluminum oxide has a composition of 52.9% aluminum and 47.1% oxygen by mass. If 16.4g of aluminum reacts with oxygen to form aluminum oxide, what mass of oxygen reacts?
The chloride in a sample containing approxiamately 3.5% NaCl is to be determined
gravimetrically as AgCl. What weight of sample must be taken to obtain a precipitate
that will weigh about 0.10 g?
A certain concentration works best when the analyte’s concentration is approximately 10ppb.
B. If the analyte is present at 10% w/v, how would you prepare the sample for analysis
2 AlBr3 + 3 Cl2 → 2 AlCl3 + 3 Br2
If a reaction occurs using 3.75 moles AlBr3, how many moles of Br2 would be produced?
A 10 percent (W/V) salt solution is used in making pickles.what Mass of salt is present in 750 ml of this solution
b) Answer the following stoichiometry questions by referring to the equation below:
2
KClO3 2 KCl + 3 O2
i. If 1.50 moles of KClO3 decomposes, what is the mass of O2 that will be produced?
ii. If 80.0 grams of O2 was produced, how many moles of KClO3 are decomposed?
iii. Find the mass of KClO3 needed if we need to produce 2.75 moles of KCl.
