Awhite powder is known to be a mixture of magnesium oxide and aluminum oxide. 100cm3 of 2moldm-3 naoh(aq) is just sufficient to cause the aluminum oxide in x grams of the mixture to dissolve. the reaction occurring is al2o3 + 2oh- + 3h2o > 2al(oh)4- 800cm3 of 2 moldm-3 hcl (aq) is just sufficient to cause all of the oxide in x grams of the mixture to dissolve. the reactions occurring are al2o3 + 6h > 2al3+ + 3h2o and mg2+ +h2o. how many moles of each oxide are present in x grams of the mixture ?
a. aluminium oxide 0.05, magnesium oxide 0.25
b. aluminium oxide 0.05, magnesium oxide 0.50
c. aluminium oxide 0.10, magnesium oxide 0.25
d. aluminium oxide 0.10, magnesium oxide 0.50