Question

solve this question fast
I will mark as brainliest for best answer

Answer 1

For a. Sodium(Na):-Sodium metal reacts rapidly with water to form a colourless solution of sodiumhydroxide (NaOH) and hydrogen gas (H2).

Na + H2O →NaOH + H2

Now as per the law of conservation of mass, mass is neither created nor destroyed in a chemical reaction. So, the equation should be balanced.

Balancing the equation we haveK

2Na+ 2H2O → 2NaOH + H2

b. for calcium Calcium has periodic symbol “Ca”

water is a compound “H2O”

calcium react with water on contact, forming Calcium hydroxide (CaOH)2 and Hydrogen H2.

the reaction gives off heat, but is a much slower reaction than other alkaline metals.

from memory (I haven’t studied chemistry for 15 years!)

The equation looks something like below:

Ca + H2O > 2 CaOH + H2

c. for cobalt d.for nitrogenN2 + 3H2 → 2NH3 e.for sulphur h2 + s_h2s f.chlorinereaction between hydrogen and chlorine gas?
H2+Cl2⇒2HCl