Home > Chemistry > Balancing Chemical Equations

With respect to the following reaction, which is the correct statement? #2HNO_3(aq) + 3H_2S(aq) rarr 3S(s)+2NO(g) +4H_2O#; a. both sulfur and nitrogen are reduced; b. nitrogen is reduced and sulfur is oxidized; c. oxygen is oxidized; d. this is not redox.

Answer 1

Naomi Aronson

#b.#

#2HNO_3 + 3H_2S rarr 3Sdarr +2NOuarr +4H_2O#

Are the redox half equations written down?

Nitrate ion, #N(+V)#, is reduced to nitrous oxide, #N(+II)#.

#HNO_3 + 3H^(+) +3e^(-) rarr NO + 2H_2O#

Attempt to depict the oxidation of sulfur.

I assume that this is a first-year chemistry problem; it must be at least an A level.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Cameron Andrews

The correct statement is b. Nitrogen is reduced, and sulfur is oxidized.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.