Please show how to answer question 10 Laboratory Questions 8) Choose ONE of the

Question

Please show how to answer question 10 Laboratory Questions 8) Choose ONE of the following: a) Calculate the pH of a solution in which the [SO]-[HSO 6) Calculate the pH of a solution in which the (CO, ] (HCO, . 9) Choose ONE of the following a) Write a balanced net ionic chemical equation which explains the pH of the hydrogen sulfate ion. b) Write a balanced net ionic chemical equation which explains the pH of the ammonium ion. 41, o% 10) A solution made from unknown sample "53" turns red litmus paper blue, turns indicator AY rO, turns a flame an intense oY, and when treated with 1M HC,H,O,NaC,H,O, (HOAc/NaOAc) and sodium cobaltinitrite forms a precipitate. Is NH,CI Positive/Absent/Uncertain explain and state aditional tests. and tha peeipilo us erws present wus Cec p.tale trem 11) Choose ONE of the following: a) Using the flame test, can you reliably distinguish between a true positive test for sodium ion vs a sodium ion impurity, and explain? b) For the nitrate ion test, why is it not necessary to consider chemical interference from carbonate ion or hydroxide ion? uth sediunon be lere a test hat dousn ts ositde that dn faln nto the lasenas,

Explanation / Answer

Ammonium chloride solution is acidic in nature and it can not turn red litmus paper blue. Rather it turns blue litmus paper red.

And NH4+ does not respond to sodium cobaltinitrate test.

So, the unknown solution does not contain NH4Cl

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