How do I do these questions? (1 Viewer)

[SB257426]

 

[synthesisFR]

3) metal plus acid gives salt and hydrogen gas
then they gave u conditions for molar volume (24.79) so u just do moles times that
6) the acid is weak bc that ph is high, if it were strong u would get like 0.4
so conjugate X(-) is basic in nature, so when NaX dissociates the ph is higher than 7 (Na is neutral)

 

[SB257426]

3) metal plus acid gives salt and hydrogen gas
then they gave u conditions for molar volume (24.79) so u just do moles times that
6) the acid is weak bc that ph is high, if it were strong u would get like 0.4
so conjugate X(-) is basic in nature, so when NaX dissociates the ph is higher than 7 (Na is neutral)

I did what u said in the first place
for Q3 but the answer I am getting is none of the options given

 

[synthesisFR]

2Na + H2SO4 --> H2 + Na2SO4
n NA= m/MM
= 0.350/22.99
= 0.015...
n H2SO4 = cxv
= 0.1 x 0.1
= 0.01
Na is limiting
n H2 produced
n H2 = 1/2 n NA
= 0.0076...
n = V/MV
V = 0.0076.. x 24.79
= 0.1887... = 0.189L
Is the answer b