Match the following equation with the type of chemical reaction. question 6 options: h2 + o2 > h2o hbr > h2 + br2 hcl + naoh > h2o + nacl al + h2so4 > h2+ al2(so4)3 c2h6 + o2 > h2o + co2 1. synthesis 2. decompostion 3. single- displacement 4. double- replacement 5. combustion

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.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.