Metals generally do not react with bases but a metal x reacts with base
NaOH to form a salt y. Also gaseous bubbles are seen when it is heated.
A) Identify x and y.
B) Write the balanced chemical equation.
C) Name the gas and write the test to identify it.
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Answer:
a) x= aluminium
y=NaAlO2
.
b) 2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2
.
c)hydrogen.Hydrogen ignites in air. If hydrogen is present in a test tube, a lighted splint held near its mouth ignites with a squeaky pop.
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