Question

6 A student takes about 0.5 g of sodium carbonate (Na,Co) in test tube A and so 0.5 g of sodium hydrogen carbonate (NaHCO) in test tube B. After this students about 2 ml of dilute HCI to both the test tubes. Which of following observations is true about the above experiment?

i)Carbon dioxide gas is evolved which turns lime water milky,
ii) Sodium chloride is one of the product
iii) CO2 is gas evolved which burns with a pop sound when ignited
iv) Hydrogen gas is evolved which burns with a pop sound

a) i and iii
b)i and iv
c)ii and iii
d)i and ii

​

Answer 1

Answer:

opt d

.as nacl is formed

.and co2 relestsed

in delivwry tube turn lime water milky

. co2 dosnt burns with pop sound

. h2 gas is not evolved here

if u find helpfull

mark me brainliest

thankyou .

Answer 2

Answer:

option D

Explanation:

NaHCO3 + HCL ➝ NaCl + H2O + CO2

NaCO3 + HCL ➝ NaCl + H2O + CO2

as you can see carbon dioxide is evolved and sodium chloride is also a product. Carbon Dioxide makes lime water milky so i and ii are correct.

iii option is incorrect since only in H2 you can hear a pop sound and iv is incorrect since water ( H2O ) is formed not H2

therefore , option D is correct.

hope my explanation helps :)