Question

Give reason:

i).Granulated zinc reacts faster with 2M HCl then 1M HCl.

ii).Food kept at room temperature spoils faster than that kept in refrigerator
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Answer 1

Explanation:

• The metal zinc readily reacts with hydrochloric acid to produce hydrogen gas (H2) and zinc chloride (ZnCl2). ... The zinc reaction produces the heat and hence has the negative enthalpy....
• Temperature affects storage time and food deteriorates faster at higher temperatures. Microorganisms grow rapidly at room temperature . ... Thawing food at room temperature increases the risk of bacterial and fungal growth and accordingly the risk of food poisoning. Once thawed , the food should never be refrigerated....
• HOPE THIS WILL HELP YOU

Answer 2

Answer:

hey mate here is your answer

Explanation:

1) Explanation: The metal zinc readily reacts with hydrochloric acid to produce hydrogen gas (H2) and zinc chloride (ZnCl2). ... The zinc reaction produces the heat and hence has the negative enthalpy.

2) Explanation: Temperature affects storage time and food deteriorates faster at higher temperatures. Microorganisms grow rapidly at room temperature . Thus to slow microbial growth, enzymatic and oxidative processes, food must be stored at room temperature.

hope it'll helps you........