Maligayang pagdating sa Imhr.ca, kung saan maaari kang makakuha ng mga sagot mula sa mga eksperto. Kumonekta sa isang komunidad ng mga eksperto na handang tumulong sa iyo na makahanap ng eksaktong solusyon sa iyong mga tanong nang mabilis at mahusay. Nagbibigay ang aming platform ng seamless na karanasan para sa paghahanap ng mapagkakatiwalaang sagot mula sa isang network ng mga bihasang propesyonal.

pts) A 25.0 mL sample of water from the lake was acidified and treated with excess sodium molybdate, leading to the formation of 12 -molybdophosphoric acid (12-MPA):

+ 24 H+ =====-> H3PMO12040

+ 24Nat +

12 H20

HsPO4 + 12 NazMoO4

The 12-MPA was separated from the excess sodium molybdate by extraction with two successive 10.0 mL portions of iso-amyl alcohol. When the combined extract was aspirated into the flame of an atomic absorption spectrometer set-up for measuring molybdenum, an absorbance of 0.662 was obtained. The absorbance of a 5.00- ppm Mo standard in the same volume of iso-amyl alcohol was 0.203.Calculate the ppm PO43 in the sample.

Sagot :