Q1. A beaker with 100 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100. A student adds 6.60 of a 0.350 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.

Q2. Duchenne muscular dystrophy is caused by a sex-linked allele. Its victims are almost always boys who die before the age of 20 years. Why is the disorder rare in girls?