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Question

1)x---->CaO--->y

2)E--->E2O3---->E3EO3

3)x--->y--->H2SO4

4)Cu--->x--->CuOH

5)Na--->Na2O--->NaOH

6)E--->P2O5--->y

Answer 1

1)
2CaO" alt="2Ca + O2 ----> 2CaO" align="absmiddle" class="latex-formula">
Ca(OH)2" alt="CaO + H2O ----> Ca(OH)2" align="absmiddle" class="latex-formula">
2)  
2Al2O3" alt="4Al + 3O2 ----> 2Al2O3" align="absmiddle" class="latex-formula">
2NaAlO2 + H2O" alt="Al2O3 + 2NaOH ----> 2NaAlO2 + H2O" align="absmiddle" class="latex-formula">
3)
2SO3" alt="2SO2 + O2 ----> 2SO3" align="absmiddle" class="latex-formula">
H2SO4" alt="SO3 + H2O ----> H2SO4" align="absmiddle" class="latex-formula">
4)
2CuO" alt="2Cu + O2 ---> 2CuO" align="absmiddle" class="latex-formula">
2CuOH" alt="Cu2O + H2O -----> 2CuOH" align="absmiddle" class="latex-formula">
5)
2Na2O" alt="4Na + O2 ---> 2Na2O" align="absmiddle" class="latex-formula">
2NaOH" alt="Na2O + H2O ---> 2NaOH" align="absmiddle" class="latex-formula">
6)
2P2O5" alt="4P + 5O2 ---> 2P2O5" align="absmiddle" class="latex-formula">
2H3PO4" alt="P2O5 + 3H2O ----> 2H3PO4" align="absmiddle" class="latex-formula">