Astudent forgot to read the label on the jar carefully and put potassium chloride in the crucible instead of potassium chlorate. how would the results turn out

Answer : The mass of chemical species would remain the same. As potassium chloride does not contains oxygen in it.

The reaction that was supposed to be done would have turned to be opposite as reduction would occur instead of oxidation. Since, Potassium Chlorate is an oxidizing agent, and Potassium Chloride is a reducing agent, It is therefore assumed that if the student was trying to oxidize a particular species would undergo reduction instead.

The crucible when heated with potassium chloride in it would result in melting of the species.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.