Question

TELL ANSWERS OF ABOVE TWO QUESTION ​

Answer 1

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As B has strong acid and weak base so its pH will lie between 0-7..

As A has strong acid and strong base it will be nearly 7...

And C has weak acid and strong base so its pH will be between 7-14......

8. x is sodium hydroxide

When sodium hydroxide solution is heated with zinc granules then Sodium zincate and hydrogen gas are formed.

so y is sodium zincate (Na2ZnO2) and the gas z is hydrogen gas

8.2

2NaCl (aq) + 2H2O(l) ---(electrolysis)---> 2NaOH(aq) + Cl2(g) + H2(g).

2NaOH(aq)+ Zn(s)----->Na2ZnO2 (aq)+ H2(g)

Answer 2

Hope it helps you.......

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