How many grams of 02 are needed to react with 7.50g of ethanol

Write eqn, find mols, compare ratio and take mols times mr of O2 to find mass

Ithink it’s carbon dioxide

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m