Question

read the following information from a material safety data sheet (msds) about the chemical hydrochloric acid (hcl):
\skin contact: in case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. wash clothing before reuse. thoroughly clean shoes before reuse. get medical attention immediately.\
based on this information, which is the most important thing to do right away if a student spills hcl on his shirt?
remove the shirt, and rinse the skin with water.
remove the shirt, and find a sink to rinse it in.
get help from a classmate immediately.
call 911 to get medical attention immediately.

Explanation:

When a chemical (HCl) is spilled on the skin (via the shirt), the immediate action is to remove the contaminated clothing (the shirt) to prevent further contact and then rinse the skin with water to dilute and remove the chemical. Other options like getting help from a classmate immediately may delay the rinsing process (which is time - sensitive for chemical exposure), removing the shirt and then finding a sink to rinse (implies a delay in rinsing), and calling 911 immediately is an over - reaction if the first - aid (rinsing) can be done promptly.

Answer:

Remove the shirt, and rinse the skin with water.